39 
tary or fascicled in the axils, the upper spicate-racemose: carpels prominently cuspi- 
date.—Mountains of extreme western Texas. 
9. S. incana Torr. Suffruticose, 6 to 9 din. high, white-velvety throughout with 
minute appressed pubescence: leaves ovate, obtusely 3-lobed and crenulate, some- 
times subcordate: flowers small, axillary-fascicled and racemose paniculate: carpels 
cuspidate.—In extreme southwestern Texas and adjacent New Mexico and Mexico. 
A form with small deeply 3 to 5-cleft or parted leaves, the divisions and lobes com- 
monly narrow, is var. DISSECTA Gray. 
6. SIDA L. 
Plants with yellow or whitish flowers, mostly naked calyx, capitate 
stigmas, and 5 to 15 erect 1-ovuled carpels with conniving or erect tips 
or points and turgid seeds. 
“Calyx with 1 to 3 setaceous bractlets. 
1. S. hederacea Torr. Spreading and branching, 3 to 6 dm. high, covered with 
a close scurfy stellate pubescence: leaves thick, ovate, mostly obtuse, more or less 
dentate, very oblique at base: flowers solitary and axillary, mostly on short lateral 
branchlets: calyx stellate-pubescent, deeply cleft, about half as long as the petals, 
which are parti-colored, half (the exposed part in bud) purplish and with stellate 
hairs, the other yellowish and glabrous: carpels with 2 more or less prominent 
dorsal cusps and reticulated sides.—Abundant in dry valleys and hillsides of western 
Texas. 
2. S. lepidota Gray. Lower, silvery with close lepidote scurf (instead of loose 
stellate pubescence): leaves triangular-cordate or lanceolate and hastate, oblique at 
base, laciniate dentate or entire towards the apex: flowers smaller, with light yellow 
or red petals but little longer than the calyx: carpels apiculate with a very short 
obtuse beak.—Sandy ground, in the valleys of western Texas. 
3. S. cuneifolia Gray. Much Lranching and procumbent, white tomentose: 
leaves small, round-cuneiform, crenate-dentate or repand, about 12 mm. broad and 
long: flowers small, solitary or clustered in the axils, sometimes scarcely exceeding 
the petioles: petals yellow, twice the length of the calyx: carpels ovate, pubescent, 
membranaceous and turgid, short-beaked, with globose seeds.—“ In subsaline soil,” 
along the Rio Grande in Maverick County. 
**Calyx naked, not enlarging in Sruit. 
+ Sessile or short-peduncled flowers mainly at summit of low stems or branches and invol- 
ucrate by petioled leaves : petals reddish-purple, 
4. S. ciliaris L., var. rascicuLata Gray. Stems low, branching from the base, 
somewhat hairy: leaves linear, denticulate-serrate above, cordate at base, those at 
summit crowded, nearly glabrous above, stellate-hirsute beneath: carpels 5 to 7; 
scarcely beaked, strongly reticulate and muricate. (S. fasciculata Torr. & Gray. )— 
Southeastern Texas, south of the Colorado. 
+ + Flowers not involucrate, either solitary or clustered in most of the axils, or barely 
paniculate at summit: calyx 5-angled and petals mostly yellow. 
++ Stems diffusely decumbent and filiform : petioles and peduncles long and slender: leaves 
somewhat cordate, small. 
5. S. diffusa HBK. Stems very slender and hispid: leaves ovate-oblong, cordate 
at base, serrate, 10 to 14 mm. long: carpels 5, pubescent, 2-beaked. (S. filiformis 
Moric. 8S. fiilicaulis Torr. & Gray.)—Valleys and prairies of southern and western 
Texas, 
