| Classification | Acanthaceae: Dipteracanthus | 
| Classification 1 | Acanthaceae: Ruellia | 
| Barcode(s) | 00093955 | 
| Type Status | Isosyntype | 
| Collector | F. J. Lindheimer | 
| Collector number | Fasc. I.157 | 
| Country | United States of America | 
| State | Texas | 
| Geography | North America: North America (CA, US, MX) (Region): United States of America: Texas | 
| Date Collected | 1843 | 
| Remarks | [protologue: "Open woods at Sims Bayou, near Houston. May to July."] | 
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/58582d41-1df9-4f37-af03-91776950fd3f | 
| Harvard University Herbaria Barcode | 00093955 | 
| Herbarium | GH | 
| Previous ownership | Transferred from the Boston Society of Natural History to GH, Oct. 2, 1941 | 
| Family | Acanthaceae | 
| Type Status |  Isosyntype | 
| Isosyntype of |  Dipteracanthus nudiflorus Engelmann & A. Gray | 
| Verified by | W. T. Kittredge | 
| Date Determined | 2009 | 
| Taxon Reference | (for  Dipteracanthus nudiflorus Engelmann & A. Gray) Boston J. Nat. Hist. 1845. 5(2): 229. | 
| Family | Acanthaceae | 
| Determination |  Ruellia nudiflora (Engelmann & A. Gray) Urban | 
| Determined by | T. F. Daniel (ASU) | 
| Date Determined | 1982 | 
| Determination Remarks |  [current name] | 
| Annotation Text | Syntype | 
| Family | Acanthaceae | 
| Determination |  Ruellia nudiflora (Engelmann & A. Gray) Urban | 
| Determined by | D. C. Wasshausen (US) | 
| Date Determined | 1965 | 
| Annotation Text | Isotype | 
| Family | Acanthaceae | 
| Determination |  Ruellia nudiflora (Engelmann & A. Gray) Urban | 
| Determined by | B. C. Tharp | 
| Date Determined | 1947 | 
| Family | Acanthaceae | 
| Determination |  Dipteracanthus nudiflorus Engelmann & A. Gray | 
| Determination Remarks |  [label name] | 
| Family | Acanthaceae | 
| Determination |  Ruellia tuberosa Linnaeus | 
| Determination Remarks | [pencil annotation on sheet] | 
| Annotation Text | see Gray's Flora of N.A. 2 pr. 1 p. 325 | 
| Sex | not determined | 
| Phenology | Flower | 
| Preparation Type | Sheet | 
| Preparation Method | Pressed |