418 



FABACEAE. 



VOL. II. 



44. GLYCINE L. Sp. PL 753. i?53- 

 [BRADLEIA Adans. Earn. PI. 2: 324. 1763.] 



[Apios Moench, Meth. 165. I/94-] 



Twining perennial vines, with pinnately 3-7-foliolate leaves, small stipules and rather 

 large brownish-purple or red flowers, mainly in axillary racemes or panicles. Calyx cam- 

 panulate somewhat 2-lipped, the 2 lateral teeth very small, the 2 upper united and short, the 

 lower one long and acute. Standard ovate, or orbicular, reflexed. Wings obliquely obovate, 

 adherent to the elongated incurved at length twisted keel. Stamens diadelphous (9 and i) ; 

 anthers all alike ; ovary nearly sessile ; ovules o ; style slender. Pod linear, straight or 

 slightly curved, compressed, 2-valved, many-seeded. Rootstocks tuberous. [Greek, from the 

 sweet tubers.] 



Five known species, the following of eastern North America, 2 of China and i of the Hima- 

 layas. Type species : Glycine Apios L. 

 Standard suborbicular, rounded or retuse at the apex; tubers necklace-like. i. G. Apios. 



Standard produced at the apex into a thickened appendage ; tubers large, solitary. 2. G. Priceana. 



i. Glycine Apios L. Ground-nut. Wild 

 Bean. Fig. 2636. 



Glycine Apios L. Sp. PI. 753- 1753- 



Apios tuberosa Moench, Meth. 165. 1794. 



Apios Apios MacM. Bull. Torr. Club 19: 15. 1892. 



Slender, pubescent or glabrate. climbing over 

 bushes to a height of several feet. Rootstock 

 tuberous, the tubers necklace-shaped ; stipules 

 subulate, i"-2" long, deciduous ; leaves petioled ; 

 leaflets 5-7 (rarely 3), ovate or ovate-lanceolate, 

 acute or acuminate at the apex, rounded at the 

 base, i '-3' long; racemes axillary, often com- 

 pound ; peduncles shorter than the leaves ; flowers 

 numerous, brownish purple, odorous, about 6" 

 long; standard not appendaged; rachis of the in- 

 florescence knobby ; pod linear, straight or slightly 

 curved, pointed, 2'-$.' long, about 2i" wide, many- 

 seeded, its valves rather coriaceous. 



In moist ground, New Brunswick to Florida, west to 

 western Ontario, Minnesota, Nebraska, Kansas and 

 Texas. Stem with milky juice ; tubers edible. July- 

 Sept. Ground-, trailing- or potato-pea. Pig-, Dacotah- 

 or Indian-potato. White apple. Traveler's-delight. 



2. Glycine Priceana (Robinson) Britton. 

 Price's Ground-nut. Fig. 2637. 



Apios Priceana Robinson, Bot. Gaz. 25: 451. 1898. 



Tuber often 6'-7' thick, somewhat higher than 

 thick, solitary. Stems pubescent with reflexed hairs, 

 or glabrous, 3-io long; leaflets 3-9, ovate or ovate- 

 lanceolate, 4' long or less, acuminate at the apex, 

 rounded or obtuse at the base, sparingly pubescent 

 on both sides ; panicles often 2 or 3 together in the 

 axils, many-flowered, 4'-6' long; corolla greenish- 

 white, tinged with rose or magenta ; blade of the 

 standard about i' long, produced at the apex into a 

 spongy or fleshy knob ; pods linear, 4'-$' long. 



Rocky woods, Kentucky and Tennessee. Summer. 



45. FALCATA Gmel. in L. Syst. Nat. Ed. 13, 2: 1131. 1796. 



[AMPHICARPA Ell. Journ. Acad. Phil i : 372. 1817.] 

 Twining perennial vines, with pinnately 3-foliolate leaves, small white, violet or purpl 

 flowers in axillary racemes, and also solitary apetalous fertile flowers in the lower axils o 

 on the slender creeping branches from the base. Calyx of the petaliferous flowers tnbula^ 

 4-5-toothed. Standard obovate, erect, folded around the other petals ; wings oblong, curvcc 

 adherent to the incurved obtuse keel. Stamens diadelphous (9 and i) ; anthers all alike. Styl 



