Plante Lindheimeriane. 159 
floribus flavis (pl. submasc. subfcem. fruct.) Rocky soil and 
high prairies, New Braunfels. July. Plant from two to 
five feet high. | 
346. R. Toxicopenpron, Linn. ; Torr. & Gr. Fl. 1. p. 218. 
Thickets and stony prairies, New Braunfels. May, in flower: 
September, in fruit. ‘Erect, not climbing." — This is the 
Rhus verrucosa, Scheele in Linnea 21, p. 592, which is com- 
pared only with R. aromatica! The * Verrucee magne sub- 
rotund atropurpuree lucidz," of the lower surface of the 
leaves, which suggested the name, are merely exudations of 
resinous juice caused by the puncture of insects on some 
leaves only, as Dr. Engelmann has pointed out. 
t R. Toxicopenpron, Linn. var. foliis ramulisque molliter 
pubentibus. Thickets, New Braunfels. 
341. R. (Lopapium) TRiLOBATA, Nutt. in Torr. & Gray, 
Fi. 1, p. 219. Rocky soil, margin of high prairies, New 
Braunfels; March (in flower); June (in fruit). A slender, 
much branched shrub, two to five feet high. 
348. R. virens (Lindheimer, Mss.): glabella; foliis sem- 
pervirentibus 3—4-jugis cum impari, rachide nuda; foliolis 
ovatis oblongisve obtusis v. obtusiuscule acuminatis margine 
subrevolutis integerrimis coriaceis supra nitidis subtus pallidis 
sub lente minutim tomentulosis; floribus albidis thyrsoideo- 
paniculatis ; paniculis axillaribus folio brevioribus; drupa 
rubra hirsuta, putamine lenticulari levi. — Rocky soil, in open 
places, in Cedar woods, New Braunfels, &c. March; in 
fruit, August. Mr. Wright sends the same species from 
Western Texas; and Dr. Coulter collected it at Zimapan, 
Mexico. A well marked species, of the section Sumac. 
Leaflets an inch or rather more in length, smooth, except 
under a lens, soft to the touch, shining above, thick and 
rigidly coriaceous. ; 
MALVACEÆ. 
t CarumRHoë invotucrata, Gray, Pl. Fendl. p. 14, & 
Gen. Ill. 2, p. 53, t. 117. Malva involucrata, Torr. & Gray, 
Fi. 1, p. 226. Oak openings, on the Pierdenales. June. 
