145 
lucre of reflexed lanceolate bracts longer than the heads, and very small bractlets.— 
Extending into eastern Texas from the Gulf and lower Mississippi States, and prob- 
ably within our range. In wet ground. 
13. SANICULA L. (SANICLE. BLACK SNAKEROOT. ) 
Smooth perennials, with almost naked or few-leaved stems, palmately 
divided leaves (in ours), greenish-yellow or purple flowers in irregularly 
compound few-rayed umbels, prominent and persistent calyx-teeth, and 
subglobose fruit densely covered with hooked prickles. 
1. S. Marylandica L. Mostly simple, 3 to 9 dm. high: root-leaves long-petioled, 
palmately 3 to 7-parted, the divisions mostly sharply cut and serrate, the teeth more 
or less mucronate-tipped; cauline leaves similar, short-petioled or sessile: umbels ir- 
regular, 1 to few-rayed, with a few leaf-like bracts and small bractlets : flowers green- 
ish-yellow, the sterile ones numerous and long-pediceled, and the styles longer than 
the prickles.—Common throughout the United States east of the Rocky Mountains, 
without doubt to be found in Texas. 
14. AMMOSELINUM Torr. & Gray. 
Low diffuse annuals, with ternately divided leaves (the small ulti- 
mate segments linear to Spatulate), involucre and involucels of entire 
or dissected bracts, white flowers in small sessile or short-pedunculate 
unequal umbels, obsolete calyx-teeth, ovate hard fruit with prominent 
equal more or less scabrous ribs (the laterals of the two carpels closely 
contiguous), conical stylopodium, and solitary oil-tubes. 
1. A. Popei Torr. & Gray. From 7.5 to 30 cm. high, with stem-angles, rays, pe- 
dicels, and ribs of fruit rough scabrous: leaf-segments narrowly linear: fruit ovate- 
oblong, 4 to 5 mm. long, with thick corky commissure. (Apium Popei Gray).—In 
sandy soil throughout our range. 
2. A. Butleri Coult. & Rose. Smaller and nearly glabrous: leaf-segments nar- 
rowly oblong or spatulate: fruit ovate, about 2 mm. long, with ribs smooth or mi- 
nutely scabrous, and a much less prominent corky commissure, (Apium Butleri Wat- 
son).—In wet ground, eastern Texas, and doubtless within our range. 
15. FCENICULUM Adans. (FENNEL. ) 
Stout glabrous aromatic herb, with leaves dissected into numerous 
filiform segments, no involucre or involucels, large umbels of yellow 
flowers, obsolete calyx-teeth, oblong glabrous fruit with prominent ribs, 
conical stylopodium, and Solitary oil-tubes. 
1. F. vulgare Gertn., the cultivated fennel, from Europe, seems to have become 
naturalized near Brazos Santiago. 
16. APIASTRUM Nutt. 
Very slender smooth branching (somewhat dichotomously) annuals, 
with finely dissected leaves having filiform or linear (sometimes a little 
broader) segments, small white flowers in naked unequally few-rayed 
umbels, obsolete calyx-teeth, ovate or cordate more or less tuberculate 
fruit with obscure or obsolete ribs, minute depressed stylopodium, and 
oil-tubes solitary in the intervals and beneath the ribs. 
23204—vol, 2, No, 14 
