GENERA OF NORTH AMERICAN FABACEAE 
I. TRIBE GALEGEAE 
P. A. Rydberg 
(Received for publication December 16, 1922) 
The tribe Galegeae has been divided since Bentham’s time into seven 
subtribes. Of these one has already been raised to tribal rank, Psoralieae, 
which is characterized by the glandular-punctate foliage and by the pods, 
which are one- or few-seeded, usually indehiscent but rarely breaking open 
irregularly across the middle, never valvate. Another subtribe should be 
removed as a tribe Indigofereae, having three characters seldom found 
elsewhere in Fabaceae and never combined in any of the tribes. These are 
malpighiaceous hairs (appressed hairs, 2-branched with branches forming a 
straight line, the hairs therefore apparently attached at their middle), 
appendaged connectives in the anthers, and lateral spurs on the keel-petals. 
It may be that Glycyrrhiza and one or two genera should be removed also 
and form another tribe, on account of the indehiscent (though several- 
seeded) glandular fruit and confluent anther cells. 
After the removal of the two subtribes mentioned, the tribe may be 
characterized as follows: 
Herbs, shrubs, or trees, or woody vines, without glandular dotted 
foliage (except in Glycyrrhiza). The leaves are odd-pinnate or abruptly 
pinnate, with or without stipels, very rarely with malpighiaceous hairs. 
The calyx is campanulate to tubular, 5-toothed or 5-lobed, rarely more or 
less 2-tipped. The corolla is papilionaceous, with 5 petals, the two keel- 
petals more or less adnate along the lower margins. The stamens are 10, 
diadelphous or monadelphous, the connective without appendages. The 
ovary is usually many-ovuled, more or less curved or bent upwards; the 
style slender and the stigma small. The fruit is several- or many-seeded, 
2-valved, usually dehiscent. 
As stated before, Bentham and Hooker acknowledged 7 subtribes. 
These authors were closely followed by Taubert in Engler and Prantl’s 
Naturlichen Pfanzenfamilien. Taubert’s key in translation reads as 
follows, after the Indigofereae and Psoralieae have been removed: 
a. Seeds strophiolate. Flowers in 2’s in the leaf-axils or forming a 
terminal raceme (compare Tephrosia and Fordia). c. Brongniartiinae. 
/?. Seeds not strophiolate. 
I. Inflorescence racemose, terminal, opposite the leaves, or on 
the branches paniculate, more rarely in the axils of the 
upper leaves or all peduncles or only the lower paired or 
clustered in the axils. Stipe inside the staminal sheath 
sometimes surrounded by a small cup-like disk. d. Tephrosiinae. 
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