OP ARTS AND SCIENCES. 191 



HoFFMANSEGGTA Jamesii, Torr. & Gray. At Saltillo (269). 



Calliandua eriophylla, Benth. In the mountains north of 

 Monclova (319). 



CoTONEASTER DENTicuLATA, HBK. In the Sierra Madre (785). 



CuPH^A CTANEA, DC. In the mountains east of Saltillo (775). 



TuRNERA DIFFUSA, Willd., var. APHRODisiACA, Urban, Jahrb. Bot. 

 Gard. Berl. 2. 127. T. aphrodisiaca, Ward, is thus referred by 

 Urban, with very good reason. 



2. Descriptions of some New Western Species. 



Greggia linearifolia. With the habit of G. camporum, but 

 the leaves linear, attenuate to the base, entire, 1 or 2 inches long ; 

 pod narrower, C lines long or less, and less than a line broad ; style 

 shorter (not a line long), and stigmas smaller. — At Presidio on the 

 Rio Grande (Wright, in 1848) ; bluffs of Delaware Creek, Western 

 Texas (Dr. V. Ilavard, 1882) ; and at Parras, Coahuila (4G Palmer, 

 1880), referred to G. camporiim as a variety. 



Sagina crassicaulis. Stout, much branched, glabrous, appar- 

 ently perennial with slender rootstocks, decumbent: leaves broadly 

 linear, pungent, fleshy, 2 to 6 lines long, united at base into a broad 

 scarious sheath : pedicels often 4 to 8 lines long : flowers mostly erect, 

 large, the sepals exceeding the petals, over a line long : styles very 

 short : capsule ovate, scarcely exserted. — On Dillon's Beach, Marin 

 County, California (J. W. Congdon, June, 1880). Resembling 

 *S'. maxima. Gray, of Japan. 



MoNTiA HowELLii. A very slender diffuse annual, the stems \ to 

 3 inches long, procumbent and rooting : leaves very narrowly linear- 

 spatulate, 2 to 4 lines long, with a dilated scarious clasping base, very 

 rarely opposite, usually opposite to a triangular scarious clasping bract 

 which subtends a few- (usually 3-) flowered cluster ; pedicels shorter 

 than the leaves, reflexed in fruit: flowers very small ; petals 3 or 4, 

 unequal, slightly united at base, the longer ones slightly exserted : 

 stamens 3, hypogynous : stigmas 3, short : capsule ovate, about equal- 

 ling the calyx, 3-valved, 3-seeded : seeds black, smooth and shining. 

 — Collected on Sauvies Island, in the Willamette River, Oregon, by 

 Joseph and Thomas Howell, who recognized most of its peculiarities. 

 It agrees in most of its characters with Montia as distinguished from 

 Claytonia, though some species of the latter genus (as C dichotoma 

 and C linearis) have often but 3 stamens and the petals unequal. 



