Anacardiaceae A: 01869749 Dodonaea viscosa angustifolia (Linnaeus) Bentham USA: Arizona Tucson: [no additional data] M. F. Spencer 424 1920
Asteraceae GH: 00386631 Acamptopappus sphaerocephalus (Harvey & A. Gray) A. Gray USA: California Palm Springs, Colorado Desert M. F. Spencer 1455 1920-3-23
A: 00414256 Ambrosia salsola (Torrey & A. Gray ex A. Gray) Stother & B. G. Baldwin USA: California Palm Springs Irrigating Ditches, Colo. Des. M. F. Spencer 45 1920-3-19
GH: 00427485 Artemisia spinescens D. C. Eaton USA: California near Barstow, Mohave Desert M. F. Spencer 1423 1920-4-17
GH: 00414011 Gutierrezia californica (de Candolle) Torrey & A. Gray USA: California Palm Springs, Colorado Desert M. F. Spencer 1474 1920-4-2
GH: 00414011 Gutierrezia divergens Greene USA: California Palm Springs, Colorado Desert M. F. Spencer 1474 1920-4-2
GH: 00427259 Hulsea californica Torrey & A. Gray USA: California Laguna Mts. M. F. Spencer 1597 1920-6-20
A: 00414256 Hymenoclea salsola Torrey & A. Gray USA: California Palm Springs Irrigating Ditches, Colo. Des. M. F. Spencer 45 1920-3-19
GH: 00427669 Peucephyllum schottii A. Gray USA: California Cottonwood Springs M. F. Spencer 1450 1920-3-29
GH: 00386612 Pleurocoronis pluriseta King & H. Robinson USA: California Painted Canyon near Mecca, Colorado Desert M. F. Spencer 1446 1920-3-13
GH: 00414146 Xylorhiza cognata (H. M. Hall) T. J. Watson USA: California In Painted Canyon, near Mecca, Colorado Dese... M. F. Spencer 1500 1920-3-12
Bignoniaceae A: 02054934 Chilopsis linearis arcuata (Fosberg) Henrickson USA: Arizona Tucson: [no additional data] M. F. Spencer 284 1920-7
Boraginaceae GH: 00424919 Cryptantha costata Brandegee USA: California Palm Canyon, Colorado Desert M. F. Spencer 1527 1920-4-7
GH: 00424920 Cryptantha costata Brandegee USA: California near mouth of Tahquitz Canyon M. F. Spencer 1524 1920-4-4
GH: 00424923 Cryptantha costata Brandegee USA: California Mecca M. F. Spencer 1514 1920-3-15
GH: 00424887 Cryptantha decipiens (M. E. Jones) A. Heller USA: California Mouth of Tahqiutz Canyon M. F. Spencer 1522 1920-4-4
GH: 00424919 Johnstonella costata (Brandegee) Hasenstab & M.G. Simpson USA: California Palm Canyon, Colorado Desert M. F. Spencer 1527 1920-4-7
GH: 00424920 Johnstonella costata (Brandegee) Hasenstab & M.G. Simpson USA: California near mouth of Tahquitz Canyon M. F. Spencer 1524 1920-4-4
GH: 00424923 Johnstonella costata (Brandegee) Hasenstab & M.G. Simpson USA: California Mecca M. F. Spencer 1514 1920-3-15
Brassicaceae GH: 00948393 Boechera sparsiflora (Nuttall) Dorn USA: California Near Cuyamaca Lake M. F. Spencer 1437 1920-4-26
GH: 01087239 Caulanthus cooperi (S. Watson) Payson USA: California Barstow. Mohave Desert M. F. Spencer 1633 1920-4-14
GH: 01087487 Caulanthus inflatus S. Watson USA: California near Barstow. Mohave Desert M. F. Spencer 1428 1920-4-14
GH: 00379107 Caulanthus simulans Payson USA: California Barstow M. F. Spencer 1881 1920-4-14
GH: 01540235 Guillenia lasiophylla (Hooker & Arnott) Greene USA: California [data not captured] M. F. Spencer 1632 1920-4-13
GH: 01540280 Guillenia lasiophylla (Hooker & Arnott) Greene USA: California [data not captured] M. F. Spencer 1880 1920-3-20
GH: 01540286 Guillenia lasiophylla (Hooker & Arnott) Greene USA: California [data not captured] M. F. Spencer 1882 1920-4-14
GH: 01540290 Guillenia lasiophylla (Hooker & Arnott) Greene USA: California [data not captured] M. F. Spencer 1632 1920-4-14
GH: 01548826 Lepidium lasiocarpum Nuttall USA: California Palm Springs: [data not captured] M. F. Spencer 1486 1920-3-22
GH: 01548844 Lepidium lasiocarpum Nuttall USA: California [data not captured] M. F. Spencer 1495 1920-3-25
GH: 01548860 Lepidium lasiocarpum Nuttall USA: California [data not captured] M. F. Spencer 1758 1920-3-14
GH: 00379900 Stanleya pinnata (Pursh) Britton USA: California Barstow, Mojave Desert M. F. Spencer 1427 1920-4-14
Caprifoliaceae A: 00386387 Symphoricarpos mollis Nuttall ex Torrey & A. Gray USA: California Pine Hills M. F. Spencer 143 1920-6-24
Caryophyllaceae GH: 01740785 Achyronychia cooperi Torrey & A. Gray USA: California near Palm Springs, Colorado Desert M. F. Spencer 1436 1920-3-23
Chenopodiaceae GH: 00376244 Allenrolfea occidentalis (S. Watson) Kuntze USA: California Mecca, Colorado Desert M. F. Spencer 1505 1920-3-16
GH: 00376351 Atriplex confertifolia (Torrey & Fremont) Watson USA: California Barstow, Mohave Desert M. F. Spencer 1458 1920-4-12
GH: 02003653 Atriplex elegans fasciculata M. E. Jones USA: California [data not captured] M. F. Spencer 1508 1920-3-14
Cleomaceae GH: 00378532 Cleomella obtusifolia Torrey & Fremont USA: California near Barstow, Mohave Desert M. F. Spencer 1430 1920-4-16
Cucurbitaceae GH: 01543713 Brandegea bigelovii (S. Watson) Cogniaux USA: California Palm Springs M. F. Spencer 1445 1920-4-11
Ericaceae GH: 00362111 Arctostaphylos pungens Kunth USA: California Idyllwild San Jacinto Mt. M. F. Spencer 1324 1920-1-12
Euphorbiaceae GH: 00347482 Argythamnia lanceolata (Bentham) Müller Argoviensis USA: California Stony hillside near Palm Springs, Colorado D... M. F. Spencer 1480 1920-3-18
Fabaceae GH: 01963687 Acmispon micranthus (Torr. & A. Gray) Brouillet USA: California near mouth of Tahquitz Canyon. Colorado Dese... M. F. Spencer 1642 1920-3-19
GH: 01963694 Acmispon micranthus (Torr. & A. Gray) Brouillet USA: California near Tahquitz Canyon. Colorado Desert M. F. Spencer 1453 1920-3-29
GH: 01967135 Acmispon strigosus (Nuttall) Brouillet USA: California Mecca. Colorado Desert M. F. Spencer 1492 1920-3-12
GH: 00366233 Amorpha fruticosa Linnaeus USA: California Near San Diego M. F. Spencer 1442 1920-4-25
GH: 02064410 Astragalus aridus A. Gray USA: California Mecca, Colorado Desert M. F. Spencer 1483 1920-3-14
GH: 02064413 Astragalus aridus A. Gray USA: California 10 miles from Mecca, Colorado Desert M. F. Spencer 1499 1920-3-16
GH: 00366306 Astragalus coulteri Bentham USA: California Colorado Desert M. F. Spencer 1501 1920-3-11
GH: 02047868 Astragalus didymocarpus Hooker & Arnott USA: California Barstow, Mohave Desert M. F. Spencer 1426 1920-4-14
GH: 02047899 Astragalus dispermus A. Gray USA: California Barstow, Mohave Desert M. F. Spencer 1639 1920-4-14
GH: 02047902 Astragalus dispermus A. Gray USA: California Indian Reservation Palm Springs, Colorado De... M. F. Spencer 1481 1920-3-18
GH: 02052320 Astragalus layneae Greene USA: California Barstow. Mohave Desert. M. F. Spencer 1418 1920-4-14
GH: 02052480 Astragalus lentiginosus fremontii (A. Gray ex Torrey) S. Watson USA: California Barstow, Mohave Desert M. F. Spencer 1424 1920-4-7
GH: 00366306 Astragalus lentiginosus borreganus M. E. Jones USA: California Colorado Desert M. F. Spencer 1501 1920-3-11
GH: 02128640 Lupinus shockleyi S. Watson USA: California [data not captured] M. F. Spencer 1638 1920-3-18
GH: 02128639 Lupinus shockleyi S. Watson USA: California [data not captured] M. F. Spencer 1496 1920-3-14
GH: 02129946 Medicago sativa Linnaeus USA: California [data not captured] M. F. Spencer 1489 1920-3-17
GH: 00369136 Parosela arborescens (Torrey ex A. Gray) A. Heller USA: California near Barstow, Mohave Desert M. F. Spencer 1422 1920-4-17
GH: 00369136 Psorothamnus arborescens (Torrey ex A. Gray) Barneby USA: California near Barstow, Mohave Desert M. F. Spencer 1422 1920-4-17
GH: 02135333 Rupertia physodes (Douglas ex Hooker) J. W. Grimes USA: California [data not captured] M. F. Spencer 1591 1920-6-20
Fagaceae GH: 00344869 Quercus engelmannii Greene USA: California Near the brook. Alpine M. F. Spencer 1416 1920-1-1
Garryaceae A: 00401755 Garrya flavescens S. Watson USA: California Tahquitz Ridge, San Jacinto Mts. M. F. Spencer 317 1920-6-24
Hydrophyllaceae GH: 00402834 Eriodictyon crassifolium Bentham USA: California Palm Springs, Colorado Desert M. F. Spencer 1451 1920-4-1
Lamiaceae GH: 00400192 Acanthomintha ilicifolia (A. Gray) A. Gray USA: California near Sweetwater M. F. Spencer 1559 1920-6-1
Lauraceae A: 00381314 Umbellularia californica (Hooker & Arnott) Nuttall USA: California San Jacinto Mts., Idyllwild, Colo. Des. M. F. Spencer 302 1920
Limnanthaceae GH: 00364861 Limnanthes gracilis parishii (Jepson) R. M. Beauchamp USA: California near Cuyamaca Lake M. F. Spencer 1439 1920-4-20
GH: 00364861 Limnanthes gracilis parishii (Jepson) C. T. Mason USA: California near Cuyamaca Lake M. F. Spencer 1439 1920-4-20
Loranthaceae GH: 00355035 Phoradendron californicum Nuttall USA: California Mecca. Colorado Desert M. F. Spencer 1504 1920-3-15
Malvaceae GH: 00420984 Sphaeralcea ambigua rosacea (Munz & I. M. Johnston) Kearney USA: California Palm Canyon, Colorado Desert M. F. Spencer 1885 1920-4-7
GH: 00385012 Sphaeralcea emoryi variabilis (Cockerell) Kearney USA: California near R. R. station, Indio M. F. Spencer 1456 1920-3-24
Mimosaceae A: 01680522 Acacia constricta Bentham USA: Arizona Tucson: [no additional data] M. F. Spencer 476 1920-7
A: 01680523 Acacia constricta Bentham USA: Arizona Tucson: [no additional data] M. F. Spencer 415 1920-7
GH: 01680663 Acacia farnesiana (Linnaeus) Willdenow USA: California San Diego: in Mission Valley M. F. Spencer 1643 1920-11-19
GH: 00366121 Acacia greggii A. Gray USA: California Colorado Desert M. F. Spencer 1509 1920-5-16
Nyctaginaceae GH: 01642575 Abronia turbinata Torrey ex S. Watson USA: California Cottonwood Springs. Colorado Desert M. F. Spencer 1457 1920-4
Onagraceae GH: 01625452 Camissonia chamaenerioides (A. Gray) P. H. Raven USA: California Palm Canyon. Colorado DesertIn sand M. F. Spencer 1465 1920-4-7
GH: 01625867 Camissonia pallida pallida (Abrams) P. H. Raven USA: California Palm Springs. Colorado Desert M. F. Spencer 1452 1920-3-29
GH: 01625869 Camissonia pallida pallida (Abrams) P. H. Raven USA: California Palm Springs. Colorado Desert M. F. Spencer 1485 1920-3-20
Orobanchaceae GH: 01876113 Castilleja chromosa A. Nelson USA: California near Barstow. Mohave Desert M. F. Spencer 1460 1920-4-14
Plantaginaceae GH: 01046095 Antirrhinum filipes A. Gray USA: California Colorado Desert M. F. Spencer 1466 1920-4-7
GH: 01803451 Plantago ovata Forsskål USA: California [data not captured] M. F. Spencer 1920-4-19
GH: 01803439 Plantago ovata Forsskål USA: California [data not captured] M. F. Spencer 1488 1920-3-13
GH: 01803438 Plantago ovata Forsskål USA: California [data not captured] M. F. Spencer 1487 1920-3-22
Poaceae GH: 00341088 Aristida fendleriana Steudel USA: California Palm Springs, Colorado Desert. California M. F. Spencer 1538 1920-3-27
GH: 00341088 Aristida purpurea fendleriana (Steudel) Vasey USA: California Palm Springs, Colorado Desert. California M. F. Spencer 1538 1920-3-27
GH: 00341092 Aristida purpurea fendleriana (Steudel) Vasey USA: California near mouth of Tahquitz Canyon. Colorado Dese... M. F. Spencer 1542 1920-4-3
GH: 00361695 Bromus berteroanus Colla USA: California Palm Springs, Colorado Desert M. F. Spencer 1540 1920-4-2
GH: 00361696 Bromus berteroanus Colla USA: California Palm Springs, Colorado Desert M. F. Spencer 1545 1920-4-5
GH: 00361695 Bromus trinii É. Desvaux USA: California Palm Springs, Colorado Desert M. F. Spencer 1540 1920-4-2
GH: 00361696 Bromus trinii É. Desvaux USA: California Palm Springs, Colorado Desert M. F. Spencer 1545 1920-4-5
GH: 00341572 Calamagrostis koelerioides Vasey USA: California Picea Hills M. F. Spencer 1595 1920-6-25
GH: 00341092 Hordeum murinum Linnaeus USA: California near mouth of Tahquitz Canyon. Colorado Dese... M. F. Spencer 1542 1920-4-3
GH: 00355842 Muhlenbergia microsperma (de Candolle) Kunth USA: California in Palen Canyon. Colorado Desert, California M. F. Spencer 1548 1920-4-7
GH: 00341015 Pleuraphis rigida Thurber USA: California White Water - Colorado Desert, California M. F. Spencer 1529 1920-3-17
GH: 00360648 Poa bigelovii Vasey & Scribner USA: California Palm Canyon, Colorado Desert M. F. Spencer 1553 1920-4-7
GH: 00361034 Poa secunda J. Presl USA: California Barstow, Mohave Desert M. F. Spencer 1554 1920-4-18
GH: 00361386 Stipa diegoensis Swallen USA: California San Diego: Balboa park M. F. Spencer 1589 1920-5-30
GH: 00361386 Thorneochloa diegoensis (Swallen) Romaschenko, P. M. Peterson & Soreng USA: California San Diego: Balboa park M. F. Spencer 1589 1920-5-30
GH: 00361354 Vulpia myuros hirsuta Hackel USA: California San Diego: M. F. Spencer 1558 1920-3-5
GH: 00361372 Vulpia octoflora hirtella (Piper) Henrard USA: California Palm Springs: Colorado Desert M. F. Spencer 1544 1920-5-2
GH: 00361373 Vulpia octoflora hirtella (Piper) Henrard USA: California Palm Springs: near mouth of Tahquitz Canyon,... M. F. Spencer 1531 1920-3-26
Polemoniaceae GH: 01000337 Aliciella leptomeria (A. Gray) J. M. Porter USA: California Barstow. Mohave Desert M. F. Spencer 1568 1920-4-12
GH: 00385325 Gilia latiflora (A. Gray) A. Gray USA: California Barstow M. F. Spencer 1584 1920-4-14
GH: 00385326 Gilia latiflora (A. Gray) A. Gray USA: California Barstow M. F. Spencer 1584 1920-4-14
GH: 00385326 Gilia sinuata Douglas ex Bentham USA: California Barstow M. F. Spencer 1584 1920-4-14
Polygonaceae GH: 01717785 Chorizanthe rigida (Torrey) Torrey & A. Gray USA: California Cottonwood Springs M. F. Spencer 1795 1920-3-29
GH: 01966948 Eriogonum thomasii Torrey USA: California [data not captured] M. F. Spencer 1506 1920-3-13
GH: 01966997 Eriogonum thurberi Torrey USA: California [data not captured] M. F. Spencer 1470 1920-4-2
GH: 01966999 Eriogonum thurberi Torrey USA: California [data not captured] M. F. Spencer 1567 1920-3-28
GH: 02043002 Eriogonum thurberi Torrey USA: California [data not captured] M. F. Spencer 1473 1920-4-6
GH: 02043003 Eriogonum thurberi Torrey USA: California [data not captured] M. F. Spencer 1469 1920-4-5
GH: 02043149 Eriogonum trichopes Torrey USA: California [data not captured] M. F. Spencer 1472 1920-4-6
Rhamnaceae GH: 00349981 Ceanothus palmeri Trelease USA: California Laguna Mts. M. F. Spencer 1562 1920-5-31
Rubiaceae GH: 00385713 Galium angustifolium Nuttall ex A. Gray USA: California Palm Springs, Colorado Desert M. F. Spencer 1476 1920-4-6
Salicaceae GH: 00383304 Salix laevigata Bebb USA: California Barstow. Mohave Desert M. F. Spencer 1443 1920-4-12
Selaginellaceae GH: 00424521 Selaginella cinerascens A. A. Eaton USA: California San Diego: canyons and parks M. F. Spencer 1646 1920-11-15
GH: 00424494 Selaginella eremophila Maxon USA: California Palm Springs: near Palm Springs M. F. Spencer 1468b 1920-4-1
Violaceae GH: 00381924 Viola purpurea Kellogg USA: California Laguna Mts. M. F. Spencer 1441 1920-6-20
Vitaceae GH: 00381713 Vitis girdiana Munson USA: California lower slope of Laguna Mts. M. F. Spencer 1578 1920-6-13
