ROSE MEXICAN \M> CENTRAL \\M.IM< \\ PLANTS. L25 



Hypericum submontanum Rose, Bp. nov. 



Stem much branched at base and often bo above, I" to 20 cm. high, only Blightl) 

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

 ture, L-nerved, with pellucid 'lots but never black ones; flowers very small; sepals 

 linear, acute, 2 mm. or less l<>ri'_ r : petals 3 nun. or more long, drying reddish yellow ; 

 capsule I mm. long, L-celled; styles 3, distinct, Bhort, each capped by a broad Mat 

 Btigma. 



Type U. S. National Herbarium no. 304022, collected by < '. <.. Pringle in damp 

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

 2,400 meters, October 3, 1896 no. n-~>L'7;; also collected by Mr. Pringle near the same 

 locality. September 7. L901 (no. 9367). This species was distributed as //. philonoli* 

 Schlecht. & Cham., from which, however, it musl he very different. 



VI0LACEAE. 

 A NEW CALCEOLARIA. 



Calceolaria humilis Rose & Dowell, >|». nov. Plati Xl.ll. 



Perennial, stein herbaceous, branching from the woody base, 10 to 20 cm. i ijzh, 

 branches decuinbenl oi ascending, pubescenl in two lint-: leaves opposite, short- 

 petioled, 1 to 3 cm. long, L to 2 cm. wide, orbicular to ovate, acute or obtuse, glabrous, 

 crenate-serrate, the blade decurrenl on the ciliate petiole, this aboul 2 nun. long; 

 stipules subulate to lanceolate ami foliaceous, i to 8 nun. long, glabrous; flowers 

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

 puberulent, »i to 8 nun. long, the bracts opposite neat- the articulation; sepals lanceo- 

 late, acuminate, 3-nerved, glabrous, I nun. long; lip orbicular, slightly longer than its 

 claw. 4 to 5 nun. long, the claw broadly winged, ^-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. <i. Pringle on lava fields near Tizapan, Valley of Mexico, altitude 

 2,300 meters, July 30, 1901 (no. 9653). 



Explanation <>k Plate KLII. — Pig. a, plant; b, sepals; c, petals; d, two views of stamens, 

 scale ;: h and c natural size; d, -calf aboul 'J. 



CACTACEAE. 

 ESCONTRIA. A NEW GENUS. 



Escontria Rose, uyn. uov. 



Flowers small, tubular; ovary globular, covered with imbricating chartaceous, 

 translucent, persistenl Bcales, withoul spines or hairs; tube of flower narrow, also 

 bearing scales like those of the ovary; petals erect, narrow . yellow: stamens and Btipe 

 included; fruit globular, scaly, purple, fleshy, edible; seeds Mack. Tree, verj much 

 branched; ribs of stems few. 



This genus is segregated from Cereus on account of ii> small tubular flowers and 

 s.aly fruit. So far a- 1 am aware the species upon which it i- Founded has no near 

 relatives among the many described specie- of Cereus. Mr.G. N. Collin- has photo- 

 graphed fruit of this or a closely relate.) species at the l-thmus of Tehuantepec. 



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

 de Fomento of Mexico at the time of his death, which occurred in January of this 

 year. Sefior Escontrfa was a man of high scientific attainments and took a -real 

 interest in all subjects relating to the scientific development of hi- country. 



