OP ARTS AND SCIENCES. 113 



slightly surpassed by the straight spreading pedicels ; corolla white, 

 globose ; filaments hairy at the base : fruit uot seen. — Dry rocky 

 hills near Patzcuaro, Michoacan, October, 1892 (n. 4318). Resem- 

 blino- A. arguta, Zucc, in the form and indentation of the leaves, 

 but differing in their pubescence and in the inflorescence. Also near 

 A. attenuata, Hemsl. (ex char.), but not glandular, and with acute 

 by no means rounded leaves. 



Gentiana Wrightii, Gray. Mr. Pringle's no. 4237, from moist 

 meadows, Nevado de Toluca, 11,000 ft., State of Mexico, September, 

 1892, is apparently a low and considerably branched form of this 

 species, 4-6 inches in height; while no. 419G, from wet meadows, 

 valley of Toluca, is another form nearer the type. 



Halenia crassiuscula. Biennial, glabrous, slightly fleshy, 2-4 

 inches in height : stem erect, very narrowly 4-winged, much branched : 

 radical leaves oblanceolate, 3-nerved, petiolate, obtuse, including peti- 

 oles an inch in length : cauline leaves 1-3 pairs, narrowly oblanceolate 

 or oblong, obtuse, narrowed at the base : flowers including spur 6 lines 

 long, densely aggregated at the ends of the stems and branches : calyx 

 segments linear-oblong, obtuse, about half the length of the white 

 corolla ; spurs slender, spreading, and curved upwards ; flowers after 

 anthesis slightly nodding, not at all resupinate : capsules exserted, 

 acute, 4 lines in length. — Bare alpine summits, Nevado de Toluca, 

 14,000 ft., September, 1892 (n. 4229). 



Halenia Pringlei. Glabrous : root biennial : stem single, sim- 

 ple or nearly so, slender, erect, a span high : radical leaves narrowly 

 oblanceolate, 1 -nerved, attenuate below to a slender petiole; the cau- 

 line 1-2 pairs, short, lance-linear ; umbellate cymes usually 3 ; the 

 lateral from near the middle of the stem, about 3-flowered, the terminal 

 about 5-flowered : pedicels 3 lines in length : sepals oblong, acute, half 

 the length of the corolla : corolla white, 4 lines long ; spur slender, 

 deflexed spreading and curved ascending, about equalling the corolla : 

 capsule exserted, acutish. — Springy meadows, Sierra de las Cruces, 

 State of Mexico, August, 1892 (n. 4209). 



Krynitzkia linifolia, Gray. Mr. Pringle's no. 4241, from 

 muddy hollows of prairies, Flor de Maria, September, 1892, closely 

 approaches this species, and has been provisionally referred to it. It 

 belongs to the imperfectly known group of South American Krynitz- 

 kias with procumbent subfleshy stems and linear opposite somewhat 

 connate leaves. 



RussELiA subcoriacea. Glabrous: stems somewhat ligneous, 

 branched, 4-angled : leaves opposite, very short petioled, ovate, acu- 



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