22 Engelmann and Gray, 
158. D. ciurosus, N. ab E. in Linn. XVI. p. 294. = Ru- 
ellia ciliosa, Pursh. Open woods, Houston. June. 
159. DianrHera HuMiLIs. In clear water. June. 
160. Dicuiprera BRacHiaTA, Spreng. Shady woods, 
Houston. June—September. Seeds hispid, with short, 
minutely glochidiate bristles." 
161. Urricunaria supuLata, Linn. Wet prairies of Gal- 
veston Island. April. 
162. Samotus eBractreatus, H. B. K. Sandy brackish 
soil, Galveston. April. It is singular that this should have 
been overlooked by Duby, in DC. Prodr., as a North Ameri- 
can plant. It was recorded as such by Torrey in the report 
on the plants collected in Major Long’s Expedition, and 1s not 
uncommon along the coast from Florida to Texas. The 
leaves in the Texan plant, as generally in our specimens, are 
obovate or broadly spatulate, tapering into pretty long winged 
petioles, which are decurrent on the stem. 
163. Puanraco enapuHaorpes, Nutt. Galveston Island. 
164. P. arnistata, Michx. Houston, &c. April. 
165. Iresine cexostorpes, Linn. Houston. September. 
166. OpLotHeca Frormana, Nutt. Prairies and open 
woods in loose sandy soil, west of the Brazos. August. 
167. Ertogonum toneirouium, Nutt., Benth. g Puianta- 
cineuM : foliis brevioribus latioribusque. Dry prairies west of 
the Brazos. July, August. The same form occurs in Drum- 
mond’s Third Texan Collection, No. 352. 
168. PotyGoneLLA ERICOIDES. == Gonopyrum America- 
num, Fisch. & Meyer, in Mem. Acad. St. Petersb. (ser. 6.) 
IV. p. 144. Prairies, west of San Felipe, on the Brazos. 
1 Among Lindheimer’s plants a few specimens were received of the Ruellia 
justicieflora, Hook. Comp. to Bot. Mag. I. p. 176, which has also been distributed 
by Dr. Riddell, under the name of Eberlea. We refer it to the genus Hygrophila, 
R. Br. To the character given by Hooker, for the most part excellent, we may add, 
that the stem and leaves are somewhat fleshy, and that the upper lip of the corolla 
is not entire, but 2-cleft. ‘The anthers of the shorter pair of stamens are smaller 
than the others, but are polliniferous and 2-celled. The plant grows in wet 
swamps, and flowers in the autumn. 
