154 PROCEEDINGS OF THE AMERICAN ACADEMY 
* * * Cauline leaves linear, opposite: stems erect, delicate, much branched 
flowers short-pedicelled in the forks of a diffuse inflorescence. 
D. effusa, Gray. Viscid, especially upon the upper part of each 
internode: radical leaves obovate, seldom persisting; cauline very 
narrowly linear, obtuse: sepals elliptic, obtuse, or scarcely acute, not 
distinctly ribbed, considerably exceeded by the petals. — PI. Wright. 
ii. 19; Torr. Bot. Mex. Bound. 37.— Mountainous districts, New 
Mexico, Wright; Arizona, Rothrock, Lemmon. | (Adjacent Mexico, 
Thurber.) 
D. tenella, Gray. In size and habit closely resembling the pre- - 
ceding, but glabrous and not viscid: sepals acutish, rather strongly 
ribbed, a line in length, about equalling the petals. — PI. Fendl. 12, & 
Pl. Wright. ii. 19. — Shady places, woodland, New Mexico, Fendler, 
Wright, Greene. (Adjacent Mexico, Pringle.) D.NoDosA, Eugelm., 
of Mexico, is a third closely related species, but has glandular stems, 
and somewhat larger flowers with attenuate rather rigid sepals 14-2 
lines long. 
16. POLYCARPON, Leefling (woAvs, much, many, and xap7és, 
fruit, from the innumerable capsules.) — A small genus of low, much- 
branched annuals. Flowers numerous, cymose, very small. — Genus 
ascribed to Leefling in Linn. Gen. ed. 6, n- 105; DC. Prodr. iti. 376; 
Torr. & Gray, Fl. i. 173. 
. TETRAPHYLLUM, L. Nearly or quite smooth: stems 2-6 inches 
long, prostrate, or ascending: leaves quaternate or opposite, oblong 
or obovate, obtuse, 2}-6 lines long, abruptly narrowed to short 
petioles: stipules and bracts scarious, acuminate, the latter equalling 
the rather sharply acuminate sepals: petals white. — Spec. ed. 2, 
131; Eng. Bot. t. 1031; Ell. Sk. i. 182. — Introduced in S. Carolina 
near Charleston and at Camden, Curtss. (Old World.) 
P.depressum, Nurr. Smaller: stems numerous, 1—2 inches long: 
leaves opposite, spatulate, obtuse, attenuate to slender petioles : bracts 
Much shorter than the scarcely carinate sepals : petals very narrow or 
subfiliform: capsule spherical. — Nutt. in Torr. & Gray, |. c. 174; 
Brew. & Wats. Bot. Calif. i.71. — Sand hills near San Diego, Nuttall, 
Cleveland ; near San Bernardino, Lemmon. (Lower Calif., Orcutt, 
Palmer.) 
17. LORFLINGIA, L. (Dedicated to Peter Leefling, a Swed- 
ish traveller and naturalist, born 1729.) — Small spreading glandular 
Somewhat rigid annuals, with subulate inconspicuous leaves, and ses- 
‘ile solitary or more commonly fasciculate greenish flowers. — Gen. 
ed. 6, n. 52; DC. Prodr. iii. 380. 
