ef 
_ quite glabrous on both surfaces, 2 inches long, 1} inches wide: 
Species, which were named by Schultz Bipontinus, but, so far : 
__ have yet been able to learn, were never described. The descript!® 
above is drawn, not from the type which is Ehrenberg’s no. 4+! 
170 PROCEEDINGS OF THE AMERICAN ACADEMY 
which seem never to have been described, may now be given. 
Corolla smooth and (in a dried state) purplish-blue, 6 lines long; 
tube very slender; limb of 4 linear-oblong lobes, spreading or 
moderately reflexed: stamens and pistil conspicuously exserted, — 
anthers blue, curved, versatile.—On dry talus of cliffs in shade, 
barranca near Guadalajara, September, 1891 (n. 3852). The elon 
gated corolla fully confirms Dr. Watson’s view that this is 4_ 
Crusea, and not a Spermacoce. 
VALERIANA ALBONERVATA. Tuber two inches in diameter: stem 
erect, two feet in height, sulcate-striate, pubescent, subsimple up — 
to the branched inflorescence, nearly leafless: radical leaves numer 
ous, pinnate; leaflets 3-4 pairs and an odd one, broadly obovate - 
or suborbicular in outline, sometimes an inch in diameter, mostly 
smaller, cuneate at the base; limb more or less divided into 3-5 
broad rounded lobes; the edges and veins beneath covered with 4 
short and dense white pubescence: petioles pubescent, 2-4 inches — 
long; cauline leaves 1-2 pairs, distant, much reduced: inflores— 
cence regularly dichotomous; bracts awl-shaped, 1-14 lines long 
flowers small; corolla a line wide, scarcely half as long: stamens — 
exserted: fruit ovate, glabrous, 2 lines long, crowned by the 
spreading plumose calyx-teeth of the same length. — Hillsides 
San José Pass, San Luis Potosi, July, 1890 (n. 3612). a 
EvpaToRIuM FILICAULE, Schultz Bipontinus. Stem slender 
terete, striate, the upper part covered with a very short close pP® 
bescence: leaves opposite, membranaceous, petiolate, ovate, sharply 
acuminate, subcordate or somewhat hastate, serrate, nearly or 
| 
; 
. 
petioles flexuous, pubescent, 9 lines or more in length: inflores: 
cence of slender opposite spreading branches, bearing numerous” 
sub-racemose heads: pedicels filiform, 1-14 lines long, fasciculately 
er. 
scales of the involucre 9-12, linear-oblong, sharply acuminate, © 
two or three outermost much shorter than the others, all thi™ 
striate, tending to turn purple, minutely pulverulent-pubesce™ 
achenes somewhat clavate, puberulent at the angles, narrowed 
low into a sort of stipe.— Near Z. Palmeri, Gray, but differing 
its more delicate foliage, more racemose heads, and in the achené 
attenuated downward. This and the following seem to be 8% 
