~ T 
2.Corispermum L. 
Branching bushy herbs. she eee cee eat l-veined 
ry - 
Flowers perfect, solitary in the upper axils, bractlets w j ij 
, faanting. Ferianth 
&@ single membranous sepal. Stamens 1-3 unequal Styl 
z sohbet ell inmate alll bd 6s Re Ut 
flattened, convex, ” : role eae 
1, C, hyssopifolium L, Bugseed, Annual 30-50 om, tall, the stems striate; 1 
“linear, 4-5 om. long, 1-3 mm. broad. usually tipped wiih © ann 
° : y tipped with a short cusp; 
flowers crowded into slender spikes 2-4 cm. long at the tips of the RRA 
bracts 5-4 mm. long, ovate-lanceolate, acuminate, with a thin subscarious ‘ 
margin especially toward the base tipped with a short cusp: j 
long. narrowly margined. PS eee 
a reg —_ a 
European weed of sandy soils. — - . ¥ 
ine ——~> Near Horse Plains, 2135 ft., Leiberg 1602, NE 
ae 
Stas, 
Wt 
ian 
9. salsola L. Russian Thistle. Ss 
Annual bushy herbs, much branched, with rigid, subulate, spinescent leaves. 
Flowers perfect, solitary in the axils, each subtended by 2 spinescent bractlets. 
Perianth S-parted. Stamens 5. Styles 2. Utricle flattened, enclosed by the 
persistent perianth which in fruit is horizontally winged. 
_ ds Se Kali L. var. tenuifolia G.F./. Meyer. ussian Thistle. -+-¢hevese;> 
bUShy <uittittiebwenney annuals 30-90 cm. tall, the branches glabrous or pubescent, 
Jeaves exceedingly variable, subulate and 1 cm. long, to narrowly linear and 
2-5 cme long, the latter common in the variety, all spinescent at the tip; bracts 
subulate with a scarious margin at the base, recurving, spiny, the bractlets 
Similar but narrower; flowers solitary, the perianth enclosing the fruit at 
maturity, forming a sort of beak over it, the wings 5 mm long, fan-shaped, form- 
ing @ cup-like crown. 
A frequent weed in waste places and along railroad tracks; introduced from 
Asia. One of the fall “tumble weeds", 
\. 
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