Parkinson in. LEG U M I NOSyE. 



161 



iiu^hos ill diameter : petals 4 linos long, rose-culoied : pod about 2 inches long, 8 

 lines broa<l, acute at each end, on pedicels about half an inch long. — (iniy,°Pl. 

 Lindh. 177; Torrey, ]]ot. Wilkes Exp. 283, t. 3. C. Siliquastrum, var., Ijcntli.' PI. 

 Ilaitw. 307. C. Calif orniat, Torr. in Beiitli. 1. c. 3G1. 



From Mt. Sliasta niid Meiulouino Co. soiitliwanl to Sail Diego Co. ; Ciiianiaca Jlouiitaiiis 

 Palmer. Also in Northern Mexico {Gregg) and Te.xas. The common species of the Athmtic 

 States, C. Canadensis, diflers in its larger pointed leaves and narrower and longer pods. The 

 Texnn form of the present species (6\ rmifonnii, Kngclm. MSS.) differs in having its leaves some- 

 what ])rodtice(l above, though still ohtnso, nnd somewhat puiM'sceiit licncnili at least wlien young ; 

 the pedicels also nro often shorti-r. The plnte in Mot. Wilkes l';.\[i. is laully in ropresonting the 

 western form as with sliortly acute leiives. 



18. CASSIA, Linn. Sen.na. 

 Calyx-tube very short ; the divisions 5, imbricated. Petals 5, s])readiiig, nearly 

 etpial or the k)\v(!r one larger; the upper one within. Stamens .0 to 10 (in ours 7) • 

 anthers erect, attached by the base, opening by two pores or chinks at the apex. 

 Pod usually curved, many-seeded, often with cross-partitions between the seeds 

 indehiscent or 2-valved, terete or flattened, thick-coriaceous to inenibranaceou.s. 

 Seeds albuminous, transverse or sometimes longitudinal. — Herbs (foreign species 

 often shrubs or trees); leaves abruptly pinnate; ilowers mostly yellow, usually in 

 terminal or axillary racemes or clusters. 



A genus of over 300 species, abounding in tlio tropical and warmer regions of America and 

 fre(iuent in Africa and tropical Asia. The 18 or 20 species found in the United States belon" 

 mostly to the SouMioru States and especially near the bordor.s of Mexico. " 



1. C. armata, Watson. Hnrbaceous, 3 feet high, minutely puberulent, light 

 green : lealh^ts 2 or 3 pairs, thick, roiiiidful ovate, the margin nu'oliite, acutish, ] or 

 2 lines in diameter, distant upon an eh)ngatcd rigid flattened spinuloses rhachis 

 (2 in(!lies long) ; stipules and glands Avanting : (lowers in a short terminal ifKUiine, 

 yellow: pedicels slen<ler, with rigid aculeate-tipped bracts: i)etals 2 or 3 lines long': 

 ovary slightly pubescent ; the numerous ovules obli.piely transverse : young pod 

 stipitate, glabrate, linear, acuminate, compressed, the sutures thick and nerve-like. 

 — Proc. Am. Acad. xi. 136. 



Mountains between Fort Mohnve'nnd Cajon I'nss (Cooprr) ; also in Western Arizona, Lieut. 

 II lirclrr. A remarkatih! species. 



2. C. Covesii, Gray. White-tomentose and silky-villous, a foot or two hicr], 

 branching from the base : leaflets 2 or 3 pairs, obovat(!-oblong, an inch Ion-' or le^'ss' 

 obtuse, mucronate; stipules filiform, lax, caducous, 1 to 3 lines long; a gland to 

 each pair of leaflets, similar to the stipules, a line long : racemes axiHary peduncu- 

 late, exceeding the leaves, few-flowered: sepals narrow, equal: petals yellow, veined, 

 4 to 6 hues long : pod pubescent, linear-oblong, acute at each end, sessile, nearly 

 straight, somewhat comprcss(Ml, 2-valvod, many-seeded, an inch long, exceeding tlio 

 pedicel: seeds transverse. — Proc. Am. Acad. vii. 309; Watson in Wheeler's dit. 8. 



liig Canon of the Tnntillns Mts., below S;ni Dingo {Pnlwn) ■ \\. Arizona, Palmer, Wheeler. 



10. PARKINSONIA, Linn. 

 Calyx 5-parted, produced at base an.l jointed ui)on the p(>dicel ; divisions valvate 

 or narrowly imbricate. Petals .'), with daws ; the upper one within and broader 

 llian the rest, somewhat cordate, the claw pubescent and n(>ctiuilcrous on Mic inner 

 side. Stamens 10, free; filaments jnlose at base, the upper one gibbous on the 

 outside ; anthers versatile, longitudinally dehiscent. Ovary .several-ovnled, shortly 

 stipitate : style filiform, acute. Pod compressed, 2 valved, linear to linear-obloii", 



