Part 4, 1924] FABACEAE: GALEGEAE 227 



2-2.5 cm. long; pod 6-10 cm. long, about 1 cm. wide, glandular-hispid as well as hirsutulous, 

 4-8-seeded, rather abruptly acute. 



Type locality: "The Colorado Plateau and the Southern Rocky Mountains." 

 Distribution : Mountains of southern Colorado to western Texas, Sonora, and southern Nevada. 

 Illustration: Sargent, Silva pi. 114; Lounsberry, Guide Trees pi. 67; Britton, N. Am. Trees 

 f .514; Rogers, Tree Book opp. 342; Clements, Rocky Mt. Fl. pi. 28, f. 7 (all as R. neomexicana) . 



Robinia luxurians X Pseudo-Acacia. See under R. Pseudo-Acacia. 



17. Robinia breviloba Rydberg, sp. nov. 



A low scraggly shrub; branches short, puberulent; stipular spines 5-10 mm. long, puber- 

 ulent, mostly somewhat incurved; leaves rarely more than 1 dm. long; rachis puberulent, 

 sulcate above; stipels 1-2 mm. long; leaflets oval, mostly rounded at both ends, 1-3 cm. long, 

 0.6-2 cm. wide, rather densely strigose-puberulent' on both sides, paler beneath; racemes 5-8 

 cm. long; peduncle, pedicels, and calyces viscid-puberulent and more or less glandular-hispid; 

 calyx tinged with red, the tube 5 mm. long, the lobes ovate, acute or abruptly short-acuminate, 

 4-5 mm. long; corolla rose-colored, nearly 2 cm. long; pod 4-6 cm. long, 12-13 mm. wide, 

 hirsutulous and glandular-hispid, abruptly acute, 2-4-seeded. 



Type collected in the Burrow Mountains, Grant Countv, New Mexico, June 20, 1903, Metcalfe 

 189 (herb. N. Y. Bot. Gard.). 



Distribution: Mountains of southern New Mexico. 



18. Robinia subvelutina Rydberg, sp. nov. 



A shrub ; young branches canescent with short spreading hairs and more or less glandular- 

 hispid; stipular spines straight, 5-10 mm. long; leaves 1-2 dm. long; rachis subvelutinous- 

 villous and the lower part and the petiole more or less glandular-hispid ; stipels subulate, 2-4 

 mm. long; leaflets oblong to oval, rounded at the base, rounded, obtuse, or acute, and mueron- 

 ate at the apex, 2-5 cm. long, 1-2.5 cm. wide, softly short-villous on both sides, when young 

 subvelutinous; racemes short and dense, about 7 cm. long; peduncle, pedicels, and calyces 

 densely glandular-hispid; bracts ovate, acuminate; calyx-tube 5-7 mm. long, the lobes ovate- 

 lanceolate, 4-6 mm. long, short-acuminate; corolla pink, nearly 2 cm. long; pod glandular- 

 hispid, 6-S cm. long, 12-15 mm. wide, 3-6-seeded. 



Tvpe collected on the Natanes Plateau, Bisbee, Arizona, June 26, 1912, Goodding 1092 (herb. 

 N. Y. Bot. Gard.). 



Distribution: Arizona and southwestern Utah. 



19. Robinia viscosa Vent. Descr. PI. Cels pi. 4- 1S00. 



? Rd'iitia echinala Mill. Gard. Diet. ed. 8, Robinia no. 2. 1768. 



Robinia glutinosa Sims, Bot. Mag. pi. 560. 1802. 



Robinia monlana Bartr.; Michx. Fl. Bor. Am. 2: 65, as synonym. 1803. 



A shrub or small tree, 3-S m. high; branches glandular- viscid, with mostly sessile glands, 

 dark reddish-brown, the trunk with rough dark-gray bark; stipules subulate, 2-3 mm. long, 

 rarely becoming spiny on vigorous shoots; leaves 1-2 dm. long; rachis puberulent and sparingly 

 glandular; leaflets 11-27, thick and firm, ovate or elliptic, acute to rounded and mucronate, 

 2-4 cm. long, 1-2 cm. wide, puberulent or glabrate on both sides, dark-green above, paler 

 beneath ; stipels minute ; racemes 5-S cm . long, 6- 1 5-flowered ; peduncles and pedicels glandular- 

 viscid as well as puberulent; calyx puberulent, red-purple, the tube 4 mm. long, the lobes 

 deltoid, acuminate, 4 mm. long; corolla 15-20 mm. long, pink; pod 5-8 cm. long, abruptly 

 acute, glandular-hispid with short hairs, 6-9-seeded. 



Type locality: Alleghany Mountains, central Carolina, towards the sources of Savanna River. 



Distribution: Pennsylvania to North Carolina and Alabama; escaped from cultivation as 

 far north as Nova Scotia and Wisconsin. 



Illustrations: Cornuti, PI. Can. pi. 172; Vent. Descr. PI. Cels pi. 4; Nouv. Duham. 2: pi. 17; 

 Bart. Elem. Bot. pi. 21; Michx. f. Hist. Arb. Am. 3: 262, pi. 2;N. Am. Sylva 2: pi. 77; Guimp. Otto 

 & Hayne, Abb. Fremden Holz. pi. 65; Loud. Arb. pi. 87; f. 306; Bot. Mag. pi. 560; Britton, N. Am. 

 Trees f. 513; Rogers, Tree Book pi. opp. 342, 346; Sargent, Man. /. 474; Sargent, Silva pi. 115; 

 Lounsberry, Guide Trees pi. 109; Hough, Handb./. 344, 345. 



