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LEGUMINOSAE 255 
45. CANTHAROSPERMUM Wight & Arnott 
Slender twining herbs with 3-foliolate leaves which are gland-dotted 
beneath. Flowers axillary, solitary or racemed. Calyx-teeth distinct, 
longer or shorter than the tube. Corolla exserted, the keel not beaked. 
Stamens diadelphous. Ovary sessile, with 3 or more ovules; style glabrous. 
Pod oblong, somewhat turgid, marked with transverse lines or depressions 
between the seeds. (Greek name for a beetle, and “seed” from the scarab- 
like joints of the pods.) 
Species about 25, India to Mauritius and Australia, 2 in the Philippines. 
Petals deciduous; leaflets 1.5 to 3 cm long; pods less than 8 cm long. 
1. C. scarabacoides 
Petals marcescent; leaflets 3 to 9 em long; pods 5 to 7 em long.. 2. C. volubile 
1. C. scarabaeoides (L.) Baill. (Atylosia scarabaeoides Benth.). 
A slender, herbaceous, trailing or twining, more or less pubescent vine 
reaching a length of 2 m or less. Leaflets obovate-oblong to oblong, obtuse, 
1 to 4 em long, gray-pubescent on both surfaces. Racemes or corymbs short, 
few-flowered. Flowers yellow, about 1 cm long, the calyx pubescent. Pod 
oblong, straight, 2 em long or less, covered with spreading brown hairs, 
containing 3 to 5 seeds, distinctly depressed between the seeds. 
In open grass lands and thickets, San Pedro Macati, Pasay, etc., occa- 
sional, fl. Oct-March; widely distributed in the Philippines, possibly intro- 
duced. India to Madagascar, China, Malaya, and the Marianne Islands. 
2. C. volubile (Blanco) Merr. (Atylosia crassa Prain). 
A scandent herbaceous vine of indefinite length, more or less pubescent. 
Leaflets rhomboid-ovate, acuminate, base slightly cordate, the lateral ones 
somewhat oblique, 3 to 9 cm long. Racemes axillary, few-flowered, 3 to 8 
em long, the bracteoles ovate to oblong-ovate, green, deciduous, up to 2 cm in 
length. Flowers yellow, about 2 cm long, the calyx-teeth acuminate. Pods 
oblong, villous, 4 to 5 ecm long, about 1.3 cm wide, containing from 4 to 6 
seeds. 
In thickets, San Juan del Monte, rare, fl. Nov._Jan.; widely distributed in 
the Philippines, but not common; India to Indo-China and Malaya. 
46. CAJANUS DeCandolle 
An erect branched shrub or suffrutescent herb. Leaves 3-foliolate. 
Flowers racemed. Calyx-tube campanulate, the teeth short. Corolla much 
exserted, the petals equal in length, the keel truncate. Stamens diadel- 
phous. Ovary few-ovuled; style long, filiform. Pod linear, straight, nar- 
rowed at both ends, 3- to 5-seeded, with oblique depressions between the 
seeds. (From its Malabar name.) 
A monotypic genus. 
1. C. CAJAN (L.) Merr. (C. indicus Spreng.). Caguios (Tag.). 
An erect, branched, pubescent, shrubby plant 1 to 2 m high. Leaflets 
8, oblong-lanceolate to oblanceolate, acuminate, 3 to 10 cm long, grayish 
beneath when dry. Inflorescence axillary, of few-flowered, corymbose, 
peduncled racemes, 3 to 7 cm long. Flowers yellow, about 1.5 cm long. 
Pods 4 to 7 cm long, about 1 cm wide, pubescent, prominently acuminate, 
obliquely sulcate between the 2 to 7 seeds. (FI. Filip. pl. 167.) 
Cultivated for its edible seeds, fl. Dec.—Apr.; widely distributed in 
the Philippines, cultivated and subspontaneous, but certainly introduced. 
Tropics of the world, probably a native of India. 
