446 PROCEEDINGS OP THE AMERICAN ACADEMY 



seed linear, slightly pubescent, the appendage of the hooded caruncle 

 entire, oblong, nearly as long. — On calcareous ledges and banks in 

 the Santa Eulalia Mountains, near Chihuahua ; C. G. Pringle, May, 

 1885 (n. 233). 



SiLKNE Hallii. Stems several from a thick caudex, usually low 

 (I to 1| feet high), glandular-pubescent, leafy : radical leaves linear- 

 oblanceolate, the cauline linear, 2 to 4 inches long, finely pubescent, 

 the floral shorter : flowers solitary or somewhat crowded in the axils, 

 the lower peduncles moi'e elongated : calyx oblong-ovate, with broad 

 acute teeth, strongly nerved with purple or green, 6 lines long ; petals 

 purple, blade broad, bifid to near the middle, lobes somewhat oblique 

 and unequal, with sometimes a blunt lateral tooth, appendages broad, 

 entire or toothed, auricles bi'oad, undulate, more or less ciliate : cap- 

 sule ovate ; stipe 1| lines long. — In the Rocky Mountains of northern 

 Colorado, alpine; collected by Hall & Harbour (1862, n. 61), E. L. 

 Greene, above Golden City (1870), H. G. French, at foot of Pike's 

 Peak (1874), T. S. Brandegee, on Mt. Princeton (1880), and H. N. 

 Patterson, on Gray's Peak and vicinity (1885). It has been referred 

 to S. Scouleri, from which it may be distinguished by its shorter and 

 stouter stems, broader and shorter calyx, the form and color of the 

 petals, and the broader capsule upon a shorter stipe. 



Talinum brevicaule. Roots very thick, branched and spread- 

 ing : caudex somewhat branched, sending up very short herbaceous 

 stems (about an inch high) scaly-bracted below, densely leafy and 

 branching above : leaves sessile, terete, 3 to 6 lines long : jDcduncle 

 about equalling the leaves, bearing 1 to 3 slender pedicels scarious- 

 bracted at base : petals purple, obovate, 5 lines long, nearly twice 

 longer than the obovate sepals : ovary ovate, the style a little shorter 

 than the petals. — In the Santa Eulalia Mountains, Chihuahua ; C. G. 

 Pringle, May, 1885 (n. 26). With the habit of T. brachypodum. The 

 older leaves on the dried specimens are inflated upon one side, the 

 epidermis being completely separated from the parenchyma. 



Abdtilon malacum. Apparently tall and suffrutescent, branch- 

 ing, very finely and closely velvety-pubescent throughout : leaves cor- 

 date, acute, acutely and somewhat unequally dentate, \h to 4 inches 

 long and broad, about equalling the petiole : panicles axillary and ter- 

 minal ; pedicels jointed above the middle, 2 to 6 lines long in fruit, occa- 

 sionally solitary in the axils and elongated : calyx cleft to or below the 

 middle into lanceolate lobes, 3 or 4 lines long ; petals twice longer, 

 orange : carpels 5, oblong, acutish, coarsely stellate-pubescent, equal- 

 ling the erect calyx. — Western Texas, collected in Wilson County 



