Of ^. 



ROSE MEXICAN AND CENTRAL AMERICAN PLANTS. 125 



Hypericum submontanum Eose, sp. iiov. 



Stem much branched at base and often so above, 10 to 20 cm. high, only slightly 

 angled; leaves docuspate, lanceolate, obtuse, 10 to 12 mm. long, rather thin in tex- 

 ture, 1-nerved, witli pellucid dots but never black ones; flowers very small; sepals 

 linear, acute, 2 mm. or less long; petals 3 mm. or more long, drying reddish yelloAv; 

 capsule 4 mm. long, 1-eelled; styles 3, distinct, short, each capped by a broad flat 



stigma* 



Type l\ S. National Herbarium no. 304022, collected by C. G. Pringle in damp 

 sandy meadows and lava fields on the Sierra de Ajusco, Distrito Federal, altitude 

 2,400 meters, October 8, 1S96 (no. 6527); also collected by :\Ir. Tringle near the same 

 locality, September 7, IWl (no. 9357). This species was distributcil as IT. philonotis 

 Sehlecht. & Cham., from which, however, it nuist be very different. 



VIOLACEAE. 



A NEW CALCEOLARIA. 



Calceolaria humilis "Rose & Dowell, sp. nov. Tlate XLII. 



Perennial, stem herbaceous, branching from the woody base, 10 to 20 cm. I.i.udi, 

 branches decumbent or ascendinj,', pulx'scent in two lines; leaves opposite, short- 

 petiuled, 1 to 3 em. long, 1 to 2 cm. wide, orbicular to ovate, acute or obtuse, glabrous, 

 crenate-serrate, the blade decurrent on the ciliale petiole, this about 2 mm. long; 

 stipules subulate to lanceolate and fuliaceous, 4 to 8 mm. long, glabrous; flowers 

 violaceous, nodding on slender, one-flowered, solitary, axillary peduncles; peduncles 

 puberulent, Oto 8 Jiim. long, the bracts opposite near the articulation; sepals lanceo- 

 late, ncnminate, 3-nerved, glabmiis, 4 nun. long; lip orbicular, slightly longer than Its 

 claw, 4 to 5 mn:i. long, the claw broadly winged, 5-nerved; lower stamens puberu- 

 lent on the lower part of the connective above the gland-like appendages; capsule 

 ovoid-globose, with a blunt beak, glabrous. 



Collected by C. G. rringle on lava fields near Tizupan, Valley of Mexico, altitude 



2,300 meters, July 30, 1901 (no. 1)G53). 



Explanation ok 1'j.ate XLIL— Fi^.a. plant; b, sepals; (\ petals; d, two views of Htainens. Fig. a, 

 RDile i; b and c natural size; d, scale aT>ont 2. 



CACTACEAE, 



ESCONTBIA, A NEW GENUS. 



Escontria Ro.se, gen. nov. 



Flowers suiall, tubular; ovary globular, covered M'itli imbricating chartaceous, 

 translucent, ]jersi?^tent scales, uitliout spines or baiiv; tube of flower narrow, also 

 bearing scales like tliose of the ovai y; petals erect, narrow, yellow; stamens and stipe 

 included; fruit globular, scaly, puiple, llesby, edible; seeds black. Tree, very mucb 



l)ranclied; ribs of stems few. 



This genus is se^re^^ated from Cereus on account of its small tubular flowers and 



scaly fruit. So far as I am aware tlie species upon which it is founded has no near 

 relatives among the many described species of Cereus. IVlr. G. X. Colhns has photo- 

 graphed fruit of this f^r a closely related species at the Isthmus of Tehuantepec. 



This genus is named for the late Senor Don Bias Escontrfa, who was Ministro 

 de F(tmento of ^Icxieo at the time of his death, which occurred in January of tins 

 year. Seilor Escontrfa was a nian of high scientiiic attainments and took a great 

 interest in all subjects relating to the scientiiic development of his country. 



