NEW CHORIPETALOUS EXOGENS. 17 
DRABA PETROPHILA. Stems several, rigidly erect from a 
slightly decumbent base, about 4 inches high, these and the 
long basal leaves arising from a stout and simple perpen- 
dieular erown or rootstock densely clothed with the persist- 
ent bases of the leaves of former years: basal leaves oblan- 
ceolate, obtusish, entire 14 inches long, stellate-pubescent 
and hirsute-ciliate; the cauline similar as to pubescence, 
though less ciliate, but rather numerous, ovate-oblong, spar- 
ingly toothed, sessile by a broad base and erect: racemes 
short and subcorymbose; corollas large, yellow ; calyx spar- 
ingly hirsute: pods elliptie or elliptic-lanceolate, glabrous, 
strongly twisted, beaked by a slender style 3 line long or 
more. 
Ledges of the Santa Rita Mountains, southern Arizona; 
collected by C. G. Pringle, 1884, and distributed as D. strep- 
tocarpa; but greatly at variance with that in its stout scaly 
caudex, upright basal leaves, and obtuse erect cauline ones, 
not to speak of that stellate pubescence which completely 
debars its admission as a form of that species. 
DRaABA HznLERIANa. OD. stylosa, Heller in herb., not of 
Dulac (1867), nor Turez. (1854), nor D. aurea, var. stylosa, 
Gray. Stoutish freely branching and leafy biennial (or per- 
haps sometimes perennial) 14 feet high; herbage rather 
thinly clothed with short forked or somewhat stellate hairs, 
the stem with some longer and hirsute ones forked above 
the middle: cauline leaves ovate-oblong, entire or few- 
toothed, somewhat narrowed to the sessile base: racemes 
numerous and short, subsessile: sepals yellow, hirsutulous 
with forked hairs; petals golden-yellow: pods much longer 
than the pedicels, narrow and twisted, acute, tipped with a 
long stoutish style, marginally hispid-ciliolate, the hairs 
either simple or forked. 
In eafions among the foothills of New Mexican mountains 
at elevations of 7,000 to 8,000 feet, Heller (n. 3669), and 
Wooton (275). Mr. Heller's statement, printed on his labels 
Prrrosia, Vol. IV. Pages 17-24. 7 Feb., 1899. 
