OF ARTS AND SCIENCES. 



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rowly acuminate apex (4 to 8 inches long by 9 to 18 lines broad), 

 more distinctly ciliate : branches less slender, ascending, with distant 

 nodes ; pedicels jointed toward the base ; perianth yellow becoming 

 pale, o or 6 lines long, and capsule 3 or 4 lines long. Both of these 

 species must be distinct from the common form with very elongated 

 and narrow leaves. 



Dasylirion inkrme. Tree-like, 20 to 30 feet high and 2 to 4 feet 

 thick at base, with few branches : leaves 2 to 4 feet long by 6 lines 

 broad, long-attenuate, thin and scarcely at all carinate, the margin 

 unarmed, very minutely serrulate : inflorescence paniculate, a foot 

 broad or more: fruit ti'iquetrous, broadly winged, 5 or 6 lines long. — 

 On limestone ledges at Las Palmas, Saa Luis Potosi ; June, 1890 

 (n. 3108). A very remarkable species. 



Tradescantia Pringlei. Stems slender, decumbent and rooting 

 at base, glabrous or with a pubescent line on one side : leaves ovate, 

 short-acuminate or only acute, 1 to 1| inches long, minutely puberu- 

 lent, the short petiole and loose sheath villous-ciliate : peduncles axil- 

 lary and terminal, a little shorter than the leaf, bearing a small head 

 of nearly sessile flowers : bractlets and sepals glabrous or a little 

 ciliate, the latter 2.', lines long; petals purple: stamens 6, unequal, 

 the longer with filiform filaments bearded in the middle (or one 

 naked) and broadly oblong anthers, the shorter filaments very densely 

 bearded in the middle with green gland-tipped hairs, the anthers 

 orbicular ; anther-cells contiguous. — In the Sierra Madre near Mon- 

 terey ; July, 1888 (n. 2226). 



Cham^dorea Pringlei. Acaulescent or nearly so : leaves erect, 

 pinnate, nearly 3 feet high ; leaflets 12 to 15 on each side of the triangu- 

 lar rhachis, linear-lanceolate, acuminate, 6 or 8 inches long by 3 or 4 

 lines broad: inflorescence dioecious, the staminate spadix arising from 

 the base and about equalling the leaves, simjJe ; peduncle covered 

 with sheathinw bracts; flowering rhachis about 8 inches long: flowers 

 scattered ; calyx 3-parted, the segments orbicular ; corolla 3-parted, 

 valvate ; abortive ovary columnar, greenish : pistillate flowers and 

 fruit unknown. — In Tamasopo Canon, San Luis Potosi; June, 1890 

 (n. 3527). The most northern locdity known for any species of the 

 genus. While the absence of pistillate flowers renders the section 

 to which the species belongs uncertain, it nevertheless appears to be 

 clearly distinct from the few other known species that have a simple 

 spadix. 



Eriocaulon Jaliscanum. Dwarf: leaves subulate, acuminate, 5 

 to 8 lines long by nearly a line broad, little exceeding the bifid 



