PHASEOLUS 



PHASEOLUS 



2575 



like that of the last, the Ifts. ovate and somewhat 

 acute: fls. very showy, red (or light blue?), fragrant: 

 pod 4-6 in. long, usually curved. Tropics. 



AA. Plant low, spreading or trailing, annual above the 

 ground: root tuberous: fls. small, in loose axillary, 

 interrupted racemes. 



3. retusus, Benth. METCALF BEAN. Root very 

 large and fleshy, running deep into the ground: st. 

 roughish: Ifts. rhombic to oblong, mostly obtuse and 

 often retuse, rough on both sides, with prominent 

 veinlets, especially beneath: fls. reddish purple: pod 

 flat, short, broadly oblong, somewhat curved. Texas, 

 west and south. Lately recommended as a forage 

 plant in the dry regions of the S. W. Not promising in 

 Ariz, at elevations less than 4,000 ft. The Ivs. are thick 

 and heavy and adapted to dry, hot climates. Sts. grow 

 8-10 ft. or more long on the mountains where it is a 

 favorite food for deer. 



II. ANNUAL GARDEN BEANS. 



The species of this group are all annuals with the 

 exception that P. multiflorus and P. lunatus are peren- 

 nial in tropical countries. The somewhat thickened 

 roots of the former sometimes live over in the South, 

 but both species are strictly annual in the northern 

 and middle states. 



A. Fls. yellow. 



B. Lfts. distinctly lobed. 



c. The Ifts. 3-o-cut for one-fourth to one-half their length. 



4. aconitifolius, Jacq. MOTH BEAN. A diffuse trail- 

 ing plant. 1-2 ft. long with slender sts. loosely covered 

 with rather stiff, brown hairs: Ifts. 3-5-lobed at the 

 apex for one-fourth to one-half their length, the lobes 

 narrow; stipules small, narrow, and pointed: fls. very 

 small, yellowish, in heads on the ends of hairy axillary 

 peduncles: pod becoming 2 in. long, nearly cylindrical, 

 glabrous; seeds clay-colored, cylindrical, distinctly 



elongated, average 

 weight about .03 

 gram. ; hilum less 

 than T^in. (2 mm.) 

 long. India^ where 

 it is cult, for 

 human food and 



for forage, but only rarely seen in collections in this 

 country. 



cc. The Ifts. shaUowly 3-lobed. 



5. angularis, Willd. ADZUKI BEAN. Erect, 1-2 ft. 

 high: sts. slightly furrowed, smooth or with scattered 

 retuse hairs: Ifts. ovate, shallowly 3-lobed, 

 smooth or slightly roughened with scat- 

 tered hairs: fls. yellow, in 2's or 3's on 

 axillary peduncles: pods small, cylindrical; 

 seed red, cream, black or mottled, small, 

 average weight about .07 gram, oblong to 

 nearly round, frequently with square end 

 walls, ratio length to thickness (hilum to 

 back) from 1:1 to 1.5:1; hilnm ^in. (2 

 mm.) long or longer: primary Ivs. ovate, 

 their bases truncate or only slightly auricu- 

 late, their petioles %in. (10 mm.) long or 

 longer. Asia. Cult, in N. China and 



2895. Leaf of Phaseolus vulgaris. 



2896. Cran- 

 berry Pole bean 

 Phaseolus 

 vulgaris. (XJi) 



2893. Barteldes Bush Lima. Probably a 

 form of Phaseolus multiflorus. ( X ^Q 



2894. Phaseolus 

 multiflorus. White- 

 seeded form. ( X }fl 



Japan, where it is eaten boiled with soups or mixed 

 with rice. 



BB. Lfts. entire. 



c. One wing rotted completely over keel: bases of primary 

 Ivs. cordate, their petioles %in. long or longer. 



6. calcaratus, Roxbg. RICE BEAN. Annual, erect, 

 1-2 ft. high, in habit much resembling the preceding 

 species: Ifts. broadly ovate: fls. yellow, in 2's or 3's in 

 short axillary peduncles: seed varying in color from red- 

 dish brown to pale opaque, small, average weight about 

 .05 gram, strongly elongated, ratio length to thickness 

 (hilum to back) 1.75:1 to 2:1, hilum Tjin. (2 mm.) long 

 or longer: primary Ivs. narrowly lanceolate. Asia. 

 Cult, sparingly in China and India, where it is used 

 boiled in soups and with rice. 



cc One wing pressed against but not rolled completely 

 over the keel: bases of primary Ivs. rounded or taper- 

 ing, their petioles less than -fgin. (7 mm.) long. 



7. aureus, Roxbg. MUNG BEAN. Erect or slightly 

 twining (some varieties strongly twining on rich 

 ground), 1-3 ft. high, with furrowed sts. clothed with 

 long brown hairs: Ifts. broadly ovate or nearly rhom- 

 boid, orbicular, usually entire, thin, short-acute; stipules 

 large, ovate: fls. rather small, yellowish, in clusters of 

 5-6 on the end of stout hairy peduncles; keel spurred: 

 pod 3 in. or less long, nearly cylindrical, somewhat 

 curved, bearing 10-15 beans; seeds green or golden, 

 small, nearly round; average weight about .05 gram; 

 hilum less than rjin. (2 mm.) long. Asia. Cult, in 

 China, where it is used for bean sprouts, vermicelli 

 and gelatine, and extensively in India, also in Persia, 

 Philippines, Japan. The slender pod is hairy at first, but 

 the hairs are deciduous. P. Mungo, Linn. (THE URD), 

 a related species, is distinguished by more procumbent 

 habit, long -hairy pods, and oblong blackish seeds. 



