GREENMAN. — MEXICAN PLANTS. 303 



glabrous, resupinate, 5 to 6 mm. long, two thirds as broad ; inner bracts 

 liuear-linceolate, nearly 5 mm. long, 1 mm. broad, margins scarious ; 

 bractlets linear-lauceolate, diaphanous, about 4 mm. long with a rudi- 

 mentary flower in the axil : calyx deeply 5-parted ; divisions lance-atten- 

 uate, ciliate: corolla bilabiate, 1|^ to 2 cm. long, yellowish white striped 

 with purple in the dried state, externally pubescent: stamens with fila- 

 ments and anthers purple : capsule smooth, about 6 mm. long ; seeds 

 orbicular, flattened, muricate. — Collected by C. G. Pringle, on lava 

 beds near Cuernavaca, altitude 1,500 m., 3 November, 1S9G, no. G602 ; 

 and by E. W. Nelson, near Tlalixtaquilla, Guerrero, 10 December, 1894, 

 no. 2256. 



Bnceragenia, nov. gen. of Acanthacece {EnjusticieoR). Calyx 5- 

 parted, segments linear, subequal. Corolla tubular; tube cylindrical, 

 erect, not ampliated above ; limb short, 2-labiate, posterior lip interior, 

 incurved, deeply emarginate or shortly 2-Iobed, anterior erect or scarcely 

 spreading, 3-lobed, external. Stamens 2, anterior, inserted at the mid- 

 dle of the corolla-tube, included ; anthers 1-celled, oblong, medio-dorsally 

 afiBxed, obtuse. Staminodea 2. Disk annular, inconspicuous. Style 

 slightly thickened above, stigma minutely and unequally 2-lobed ; ovules 

 2 in each cell. Capsule oblong, narrowed below into a solid stipe ; seeds 

 4, suborbicular, flattened, strongly muricate or roughened ; retinacula slen- 

 der ; embryo normal. — Herbaceous perennials having their affinity with 

 the genus Habracanthus, but differing by the shallowly bilabiate corolla, 

 and the presence of staminodea. The generic name is taken from ySov?, 

 Kepa?, and jLyvofxai, in reference to the Spanish name Cuernavaca, from 

 which place it comes. 



Buceragenia minntiflora. Stems erect, about 1 m. high, simple, 

 nearly naked below, branched and leafy above, glabrous ; branches slen- 

 der, internodes 5 to 12 cm. in length: leaves ovate, usually acuminate 

 with an obtusish apex, rather abruptly narrowed at the base and attenu- 

 ated into a long narrowly winged petiole, entire or subrepand, ciliate, 

 minutely liueolate on the upper surface with a few scattered hirsutish 

 hairs, pubescent on the midrib and prominent veins beneath, dark green 

 above, paler beneath : inflorescence in slender interrupted spikes or 

 spikoid racemes terminating the stem and branches, puberulent and stipi- 

 tate-glandular ; spikes (4 to 13 cm. long) on slender peduncles ; bracts 

 ovate, acute, about 1 mm. long ; bractlets minute : calyx 2 to 5 mm. long, 

 5-parted, persistent ; divisions subequal, linear, acute, puberulent and 

 stipitate-glandular : corolla minute, 2 to 3 mm. long, tubular, 5-nerved, 

 slightly enlarged below ; lobes oblong, rounded at the apex, covered with 



