482 J. M. Coulter and A. Nelson. 
CIL Neues aus: J. M. Coulter and A. Nelson, New Manual 
of Botany of the Central Rocky Mountains. 1909). 
1. Corispermum imbricatum A. Nelson, l. c., p. 164. — Very glabrous 
throughout; branches spreading from the crown of the annual root, 
1—2 dm long, simple, spike-like and floriferous nearly to the base: 
leaves crowded-imbricate, lanceolate to ovate, 7—15 mm long, broadly 
scarious-margined: fruit oval, about 3 mm long, narrow wing-like margin, 
yellowish. Characters much like the preceding but of very different 
habit. — Southeastern Wyoming?). 
2. Salsola pestifer A. Nelson, 1. c., p. 169. — Bushy-branched, at 
first soft and succulent, in age rigid, often 1 m broad and high: leaves 
and outer branched bright red at maturity; the linear leaves becoming 
rigid and prickle-tipped: calyx membranous, conspicuously veiny on the 
wings. (S. Tragus of Am. authors, not S. Tragus L.) — The now widely 
distributed ,Russian Thistle“. 
3. Streptanthus coloradensis A. Nelson, l. c, p. 211. — Sparsely 
ciliate-hirsute, especially below: stems several from the crown of a 
biennial or perennial root, ascending, 1—3 dm long: radical leaves obo- 
vate-spatulate, sharply serrate around the summit, short-petioled, ovate- 
lanceolate, clasping-auricled, 1—3 cm long: flowers white, crowded at 
first, the raceme much lengthened in fruit: sepals linear, acute, half as 
long as the obovate-spatulate petals: silique linear, 6—9 cm long, as- 
cending, somewhat torulose, attenuate to a beak 3—5 mm long; the 
stipe slender, about 5 mm long, half as long as the slender pedicel. 
(Euklisia crassifolia Rydb. Bull. Torr. Bot. Club. XXXIII: 142, 1906; not 
S. crassifolius Greene, Pitt. III: 227, 1897.) — Western Colorado. 
4. Arabis aprica Osterh., 1. c., p. 228. — Biennial, glabrous above, 
cinerous below with a subhispid branched (not stellate) pubescence: 
stems 1—4 from the single crown, ascending, 1,5—2 cm high: basal 
leaves a crowded fascicle on the summit of the crown (the few stems 
arising just below or outside of the clustered leaves), hispid-ciliate, nar- 
rowly oblanceolate, tapering to a slender petiole, about 3 cm long; 
cauline leaves few, glabrous, merely foliar lanceolate auriculate bracts: 
flowers few, small: petals light rose, twice as long as the sepals: siliques 
glabrous, linear, somewhat curved, reflexed or pendent, on short widely 
spreading pedicels: seeds in 1 irregular row. — On naked limestone 
slopes; southeastern Wyoming to Colorado. 
5. Arabis perelegans A. Nelson, l. c., p. 228. — Tall biennial, more 
or less pubescent with branched hairs below, glabrate upward: stems 
1) Die vielen Namensänderungen siehe im Index nov. spec, 1909 in 
Just's Botanischem Jahresberichte. Fedde. 
?) Es ist im Interesse der Floristik entschieden zu bedauern, dass bei 
diesen Neubeschreibungen weder der genaue Standort noch der Sammler an- 
gegeben ist. Fedde. 
