32 NORTH AMERICAN FLORA [Volume 22 



acute, angled on the back, united for about one-half their length ; stamens included, borne 

 on the corolla-tube ; styles very short ; carpels short and thick, erect except at tip, free to 

 base. 



Type locality : Mt. Zacoalco, Valley of Mexico. 

 Distribution : High valleys of central Mexico. 



13. URBINIA Rose, Bull. N. Y. Bot Gard. 3 : 11. 1903. 



Acaulescent or caulescent. I^eaves closely imbricate, thick and rigid. Inflorescence 

 rather few- flowered, cymose. Calyx small, 5-lobed; lobes ovate to lanceolate, equal or 

 unequal, much shorter than the corolla. Corolla somewhat cone-shaped, the lobes united 

 at base into a tube. Stamens 10, borne on the corolla. Carpels 5. 



Type species, Echeveria agavoides Lemaire. 



Calyx-segments ovate ; flowers 8 or fewer. 1. U. agavoides. 

 Calyx-segments lanceolate. 



I^eaves of flowering stem small, scarious. 2. U. Corderoyi. 



Leaves of flowering stem large, foliaceous. 3. U. obscura, 



1. Urbinia agavoides (Lemaire) Rose, Bull. N. Y. 



Bot. Gard. 3: 12. 1903. 



Echeveria agavoides Lemaire, 111. Hortic. 10 : Misc. 78. 1863. 

 Cotyledon agavoides Baker in Saund. Ref. Bot. 1 : pL 67. 1869. 



Plants with a short thick caudex. Leaves in a dense rosette, ovate, acute, Z~^ cm. 

 long, very rigid and spine-tipped ; flowering branches slender and weak, 2-3 dm. long, 

 few-flowered ; calyx small, spreading, with 5 small ovate lobes ; corolla cone-shaped, the 

 yellow tips spreading, the base terete and red, the segments united for one-fourth their 

 length ; stamens all borne on the corolla, attached above its base. 



Type locality : Mexico. 



Distribution : Mexico. 



Illustrations : Baker, loc. ciL ; Gard. Mag. 1873 : 237 ; Fl. des Serres 19 : pi. 200J. 



2. Urbinia Corderoyi (Baker) Rose, Bull. N. Y. Bot. Gard. 3 : 12. 1903. 



Cotyledon Corderoyi Baker, Gard. Chron. II. 1 : 599. 1874. 

 Echeveria Corderoyi Morren, Belg. Hortic, 24 . 159. 1874. 



Acaulescent, glabrous throughout. Leaves 60-70, in a dense rosette, 5-7 cm. long, 

 very thick; flowering branches 15-20-flowered ; calyx rotate; corolla 18 mm. long, red at 



base, yellow above. Very near E. agavoides, but described as having more leaves and 

 flowers . 



Type locality : Not cited. 

 Distribution : Northern Mexico. 



3., Urbinia obscura Rose, Bull. N. Y. Bot. Gard. 3 : 12. 1903. 



Caulescent; stem 1 dm. high, 2-3 cm. thick. Leaves ovate, 8-9 cm. long, 4-5 cm, 

 broad at base, thick but flattened, somewhat rounded at the base ; flowering stems thickish, 

 covered with many narrow leaves, the larger ones 3 cm. long, free at base, green except 

 the pungent almost spiny tip ; inflorescence a two-branched raceme ; flowers about 10 ; 

 calyx small with 5 very unequal lanceolate teeth; corolla 12 mm. long, bright rose-colored 

 below, but the slightly spreading lobes yellow. 



Type locality : Unknown. Species described from a living specimen in collections of the 

 New York Botanical Garden. 



14. COURANTIA Lemaire, Jard. Fleur. 1 : Misc. 92. 1851. 



Caulescent. Leaves alternate, closely set, flat and broad. Inflorescence a dense spike ; 

 bracts brightly colored. Calyx-lobes equal (?), linear, brightly colored, as long as the 

 corolla. Corolla not 5-angled, yellow, 5-parted. Stamens 10, borne at base of the corolla ; 

 filaments united into a tube for half their length ; scales none (?) . Carpels widely spreading. 



Type species, Echeveria rosea Lindl. 



