226 S. Kurz — Contributions towards a [No. 4, 



Annual or biennial, the leaves as often 1- as 3-foliolate; with the 2 lateral leaflets much 

 reduced, leaflets white-variegated ; flowers pale yellow, tiirning pale brick-coloured ; 

 pod-joints about 1\ lin. long and broad, shortly and sparingly hirsute, . . P. gyrans. 



* * Lowermost bracts of young inflorescences more or less persistent. Pods dis- 



tinctly jointed. 

 Leaves 3-foliolate, the leaflets elliptical to oblong ; fruiting pedicels erect ; racemes 



elongate, D. heterocarpum. 



Leaves 1 — 3-foliolate, the leaflets more or less orbicular ; fruiting pedicels refracted ; 



racemes shorter than the leaves, P. retroflexion. 



Subg. 2. Sagotia, Warp. Pod-joints dehiscing along the lower more or less indented 

 suture. Young inflorescence not conspicuously bracted. 



* Flowers in many-floivered terminal and axillary racemes which often form termi- 



nal panicles. Erect annual herbs. 

 Stems and underside of leaves sparingly and appressedly greyish pubescent ; panicle 



glandular-puberulous ; pods glabrescent, P. obhngum. 



Stems and peduncles spreadingly tawny pilose ; pods tawny pilose, P. auricans. 



* * Flowers few, axillary or in leaf-opiposed racemes. Prostrate or diffuse herbs. 

 Flowers in leaf-opposed and spuriously terminal simple or branched racemes ; leaflets 



veiy small, P. microphyllum. 



Flowers usually yellowish, by 1 — 4 on a longer or shorter axillary peduncle which is 



longer than the leaves, P. reptans. 



Flowers usually purple or rose-coloured, by 1 — 6 in the leaf-axils, , P. triflorum. 



B. Indehiscentia. Pod-joints not dehiscing in any way.- 



* Flowers in terminal and axillary racemes often collected into 



panicles. Bracts small, deciduous or rarely persistent. 

 Subg. 3. Eu-desmodium, DC. Shrubs, undershrubs or herbs, the leaves 1 — 3- 

 foliolate ; petiole not winged. Pods various, many-jointed, the joints variously shaped, 

 but never quite square. 



* Pods and ovary quite glabrous, the joints more or less deeply indented on the 



lower suture, the basal one very shortly stalked. 

 x Leaves simple, broader than long, oblate to reniform. 

 Flowers 3 lin. long, sky-blue, on capillary glandular pedicels J — J in. long; pod-joints 



deeply indented at the lower suture, P. oblatum. 



Flowers small, white, on pedicels 1 \ — 2 lin. long ; pod-joints slightly indented at the 



lower suture, P. reniforme. 



x x Leaves oblong to oblong Janceolate. 

 Leaves simple, or the lower ones 3-foliolate ; racemes slender, in diffuse terminal pani- 

 cles ; pod-joints elliptical, 2 lin. long by If broad, P. substipulaceum. 



* * Pods and ovary variously clothed with glandular or glandless, straight or 



hooked hairs. 



x Pod-joints 4 — 5 times longer than broad, or if shorter stalk-like 

 narrowed at the base. 



+ Pod-joints pedicel-like narrowed or abruptly constricted at the 



base, securiform or crescent-shaped, puberuloiis. 



O Pod-joints crescent-shaped, abruptly constricted at both ends. 



Leaves oblong, acute or blunt, strongly parallel-nerved ; pod-joints broadly lunate, 



tumid and only 2 lin. long, coriaceous, the basal one refracted on a stalk 2 lin. 



long thickened club-like at the apex, , P. concinnum. 



