304 CONTEIBUTIONS FROM THE NATIONAL HEEBAKIUM. 



very spiny fruits, 1 cm. or more in diameter, these at first red but purplisli at maturity, 

 borne singly. They have a pleasant acid flavor when ripe, but are hard to eat on 

 account of the spines, and partly ripe berries are very astringent. The flowers are 

 orange-colored. 



2. Grossularia leptajitha (A. Gray) Coville & Britton, N. Amer. Fl. 22: 219. 1908. 

 Eibes leptanthum A. Gray, Mem. Amer. Acad. n. ser. 4: 53. 1849. 



Ribes leptanthum veganum Cockerell, Proc. Biol. Soc. Washington 15: 99. 1902. 



Type locality: "Rocky banks of the RLo del Norte, and ravines near Santa Fe," 

 New Mexico. Type collected by Fendler (no. 254). 



Range: Colorado and Utah to New Mexico and Arizona. 



New Mexico: Taos; Santa Fe and Las Vegas mountains; Raton Mountains; Sierra 

 Grande; El Rito; Sandia Mountains; Magdalena Mountains; Puertecito; Mogollon 

 Mountains; Santa Rita; Organ Mountains. Canyons and in woods, in the Upper 

 Sonoran and Transition zones. 



A very spiny shrub, from 1 to 1.5 meters high, occurring in the mountains almost 

 throughout the State, at middle elevations. It ia distinguished by the very spiny 

 young branches which are light brown, by the long, curs^ed, nodular spines, and the 

 small, crowded, more or less glandular leaves whose petioles are usually shorter than 

 the blades. The fruit is edible. 



The type of Rihes leptanthum veganum was collected by Cockerell along the Gallinas 

 River below Las Vegas. 



3. Grossularia inermis (Rydb.) Coville & Britton, N. Amer. Fl. 22: 224. 1908. 

 Rihes inerme Rydb. Mem. N. Y. Bot. Gard. 1: 202. 1900. 



Ribes purpusi Koehne; Blankinship, Mont. Agr. Coll. Sci. Stud. 1: 64. 1905. 



Type locality: Slough Creek, Yellowstone National Park. 



Range: British Columbia and Montana to Cahfomia, Utah, and New Mexico. 



New Mexico: Santa Fe and Las Vegas mountains; Chama; Mogollon Mountains. 

 Woods, in the Transition Zone. 



This gooseberry occurs in the mountains of the northern pait of the State. It may 

 be recognized by its rather slender young branches with few, small nodular spines, 

 and the slender-petioled leaves which are commonly very numerous. The berries 

 are wine-colored, about 8 mm. in diameter, smooth, and of good flavor. 



63. PLATANACEAE. Sycamore Family. 



1. PLAT ANUS L. Sycamore. 



A large tree, 10 to 15 meters high, the bark deciduous in thin brittle plates, brown- 

 ish, the young bark white or pale greenish; leaves large, 15 to 25 cm. in diameter, 

 deeply 5-lobed, the lobes triangular-lanceolate, acuminate, densely tomentose, espe- 

 cially when young; flowers monoecious, in racemes of 3 to 5 spherical heads along an 

 elongated peduncle; fruiting heads 20 to 25 mm. in diameter, on pedicels half as long; 

 achenes glabrous, about 6 mm. long, exceeding the basal hairs. 



1. Platanus wrightii S. Wats. Proc. Amer. Acad. 10: 349. 1875. 



Type locality: "In southeastern Arizona near the San Pedro." 



Range: Southern New Mexico and Arizona to Sonora. 



New Mexico: Bear Mountain; Mogollon Mountains; Black Range; Animas Peak; 

 Guadalupe Canyon; Dog Spring. Upper Sonoran Zone. 



The sycamore is usually found along the streams and in the mouths of rocky canyons 

 near the bases of the mountains. It would probably grow in cultivation, but, so far as 

 known to us, it has not been tried in the State. 



