| Classification | Asclepiadaceae: Rothrockia | 
| Classification 1 | Asclepiadaceae: Gonolobus | 
| Classification 2 | Asclepiadaceae: Matelea | 
| Classification 3 | Asclepiadaceae: Lachnostoma | 
| Classification 4 | Asclepiadaceae: Roulinia | 
| Harvard University Herbaria Barcode(s) | 00040978 | 
| Type Status | Syntype | 
| Collector | J. G. Lemmon | 
| Collector number | 238 | 
| Country | United States of America | 
| State | Arizona | 
| Geography | North America: North America (CA, US, MX) (Region): United States of America: Arizona | 
| Locality | Santa Catalina Mountains | 
| Date Collected | 1881-04-** | 
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/9b2687ad-4341-41ab-8f12-598a6e217b95 | 
| Harvard University Herbaria Barcode | 00040978 | 
| Herbarium | GH | 
| Family | Asclepiadaceae | 
| Type Status | Syntype | 
| Syntype of | Rothrockia cordifolia A. Gray | 
| Verified by | E. Sundell | 
| Date Determined | 1990-02-** | 
| Determination Remarks | [filed under] | 
| Annotation Text | however discordant with original description and other syntype (Pringle) | 
| Taxon Reference | (for  Rothrockia cordifolia A. Gray) Proc. Amer. Acad. Arts 1885. 20: 295. | 
| Family | Asclepiadaceae | 
| Determination | Gonolobus arizonicus (A. Gray) Woodson | 
| Determined by | M. Fishbein (ARIZ) | 
| Date Determined | 1994-12-** | 
| Determination Remarks | [current name] | 
| Family | Asclepiadaceae | 
| Determination | Matelea arizonica (A. Gray) Shinners | 
| Determined by | Eric Sundell | 
| Date Determined | 1990-02-** | 
| Annotation Text | however discordant with original description and other syntype (Pringle) | 
| Family | Asclepiadaceae | 
| Determination | Lachnostoma arizonicum A. Gray | 
| Annotation Text | I doubt that this is Rothrockia . It is Lachnostoma arizonicum 
Syn. Fl. N. Amer. Ed. 2. [A. Gray (scripsit) J. McI. Shapiro, 2020] | 
| Family | Asclepiadaceae | 
| Determination | Roulinia unifaria (Scheele) Engelmann ex Torrey | 
| Determination Remarks | [label name] | 
| Annotation Text | "Roulinia unifaria, Engelm." | 
| Sex | not determined | 
| Phenology | Fruit | 
| Preparation Type | Sheet | 
| Preparation Method | Pressed |