Plante Lindheimeriane. 7 
Wright.) Stems diffuse, decumbent, from a filiform, often 
tuberiferous root. Leaflets of the lower leaves orbicular, of 
the upper rhombic-ovate and mostly acute. Peduncles in our 
specimens commonly shorter than the leaves. Legume mem- 
branous, suborbicular, rostrate, transversely dehiscent ; the 
upper part strigose-pubescent, the lower glabrous and some- 
what rugose. Seeds orbicular, compressed. The singular 
transverse dehiscence of the pod appears to confirm the 
opinion that Psoralea belongs to the tribe Hedysarez. 
36. P. oprusinopa, Torr. & Gr.l.c. Dry prairies east of 
the Brazos, flowering early in the season. Legumes glandular. 
The allied, but distinct, P. floribunda is wrongly described as 
“canescent but not glandular,” whereas the plant is gen- 
erally glandular, often very much so. 
37. AmorpHa panicuLtaTa, Torr. & Gr. Fl. I. p. 306. 
Thickets, Galveston Bay, and west of the Brazos. June, July. 
A stately plant, 6 to 9 feet high, the long spikes clustered in 
ample panicles. 
38. A. euasra, Desf.; DC. prodr. 2. p. 256. Wet prairies, 
Houston, &c. 4 
39. Dauea aurea, Nutt. West of the Brazos. June to 
August. 
40. Peratostemon opovatum, Torr. & Gr. Fl. 1. p. 310. 
Brazos. August. 
41. P. puieomrs 8 micropuytuum, Torr. & Gr. lL. c. 
Sandy elevations in the prairies west of the Brazos. July. 
42. P. viotaceum, Michx.: a pubescent variety. 
43. P. moittirtorum, Nuit. On the Brazos. August. 
44. Trirotium reriexum, Linn. Galveston. May. 
45. Astracatus Nurrauianus ? TricHocarpus, Torr. & 
Gr. Fl. I. p. 334. Coast of Galveston Island, on soil com- 
posed of fragments of shells; while A. Nuttallianus is found 
in prairies in the interior of the island. The present variety, 
if such it be, has rather shorter as well as hairy pods, with 
usually 7-8 seeds in each cell, while in the true A. Nuttalli- 
anus there are commonly 10-12. 
