PULSE PAMILT. 95 



• • Leaves moitlg diptaie or palmatehj S-foUolale, all (with one exception) borne 



direit/y on the apex of Ike common petiole. 



8. TBIFOLIUM. Flowers in heads, spikes, or head-like umbels. Calvx with 

 Blender or bristle form teeth or lobes. Corolla slowly withering or becoming 

 dry and permanent after flowering; the claws of all the petals (except some- 

 times the standard) more or less united below with the tube of stamens or 

 also with each other. Pod small and thin single - few-seeded, generally in- 

 cluded in the calyx or the persistent corolla. 



§ 3. Serbs or woody plants, sometimes twining, never tendril bearing, with the leaves 

 nut diyilnte, or even diyitately S-J'iilintute [except in Hforalea), and the lenjlels 

 nut tuutlied. ( Fur Ciuer see the next section.) Stipules except in No. 15, 20, 

 and 'il, nut united loith the peiiole. 



• Fluieers {small, in spikes or heails) indistinctly or imperfectly papilionaceous. Pod 



very small and usually remaining closed, only 1 - 2-seeded. Calyx 6-tootlied, 

 persistent. Leaves odd-pimmte, iruislly dotted with dark spots or glands. 



t- Petals 6, on very slender claws : stamens monadelphous in a split tube. 



10. PETALOSTEMON. Herbs, with crowded leaves. Four petals similar, spread- 



ing, borne on the top of the tube of the stamens; the fifth (answering to the 

 standard) rising from the bottom of the calyx, and heart-shaped or oblong. 

 Sbimens only 6. 



11. DALE A. Herbs, as to our species. Flowers as in the last, but rather more 



papiiionaceuus, four of the petals borne on the middle of the tube of 10 

 stamens. 



1- +- Petal only one ! Stamens monadelphous only at the very base. 



12. AMORPHA. Shrubs, with leaves of many leaflets. Standard (the other pet- 



als wholly wanting) wrapped around tl'ie 10 filaments and style. Flowers 

 violet or purple, in single or clustered terminal spikes. 



• * Flowers [large andshowji, in racemes) incompletely papilionaceous from Hie wings 



or tlie keel also being small and inconspicuous. Pod several-seeded. 



80. ERYTHEINA. See p. 108. 



• « * Flowers obviously papilionaceous, all the parts conspicuously present. Stamens 



mostly diudelphuus. 



■*- Ovary 1-ovuled, becoming a 1-seeded indehiscent akene-like fruit. Herbs. 



13. PSORALEA. Leaves of 3 or 6 leaflets, often glandular-dotted. Flowers (never 



yellow) in spikes or racemes, often 2 or 3 under each bract. Pod ovate, 

 thick, included or partly so in the 6-cleft persistent calyx, often wrinkled. 



14. ONOBRYCHIS. Leaves odd-pinnate, of numerous leaflets. Flowers racemed, 



rose-purple. Pod flattish, wrinkled and spiny-roughened or crested. 

 16. STYLOSANTHES. Leaves pinnately 3-foliolate. Flowers yellow, in heads 

 or short spikes, leafy-bracted. Calrx with a slender stalk-like tube, and 

 4 lobes in the upper lip, one for the lower. Stamens monadelphons : 6 longer 

 anthers fixed by their base, 6 alternate ones by their middle. Pod Hat, retic- 

 ulated, sometimes raised on a stalk-like empty lower joint. Stipules united 

 with the petiole. 



16. LESPEOEZA. Leaves pinnately 3-fiiIioIate. Stipules small and free, or fall- 



ing early. Flowers purple, rose-color, or white, in spikes, clusters, or pani- 

 cles, or scattered. Stamens diadelphous: anthers uniform. Pod flat and 

 thill, ovate or orbicular, reticulated, sometimes raised on a stalk-like empty 

 lower joint. 



*- <— Ovary with at least 2 ovules. 



++ Pod separating into 2 or more sTnalt and closed 1-seeded joints in a ram. 



17. DES.MODIUM. Leaflets 3 (rarely only l),stipellate. Pod of very flat joints 



(Lessons, p. 131, fig. 304), u.=U!illy roughish and adhesive by minute hooked 

 pubescence. Herbs, withsmall purple, whitish, or purplish flowers, in racemes, 

 which are often panicled. 



18. j;SCHYMOMENE. Leaflets several, odd-pinnate, small. Pod of very flat 



joints. Herbs, with small yellow flowers (sometimes purplish externally), 

 few or several on axillary peduncles. 



19. CORONILLA. Leaflets several, odd-pinnate, small. Pod of thickish oblong 



or linear joints. Herbs or shrubs, with flowers in head-like umbels raised on 

 slender axillary peduncles. 



