52 EUPHORBIACEjE. 



3, short. Capsule 3-coccous. Seeds carunculate. — Shrubs; leaves fleshy, alternate; flower- 

 hcads cymose : involucre red. 



103. P. tithymaloides, Poit. Leaves ovate-roundish, elliptical, or spathulate-lanceolate, 

 keeled on the midrib beneath ; ovary glabrous, exserted ; capsule devoid of horns. 



a. Leaves ovate-roundish. — Jacq. Amer. Pict. t. 138. — Euphorbia, Jacq. 



0. padifolius, Poit. Leaves elliptical, pointed usually at both ends. — Pot. Reg. t. 837 ; 

 Bot. Mag. t. 2514. — P. carinatus, Spr. P. tithymaloides, var. anacampseroides, Poit. 

 Euphorbia carinata, Bot. Mag. 



y. angustifolius, Poit. Leaves spathulate-lanceolate. — Poit. in Ann. Mus. 19. t. 19./". 

 2. — Hab. Jamaica!, List, (y), on rocks along the seacoast; S. Vincent!, Guild. (0), and 

 other Caribbean islands, Jacq. (a) ; [Venezuela]. 



37. EUPHORBIA, L. 



Involucre calyciform, shortly 5-4-fid, and usually glanduliferous between the lobes, inclu- 

 ding indefinite $ and one central $ flower. Flowers and capsules as in Pedilanthus, but 

 styles 3, mostly bifid. — Flower-heads usually in umbelliform cymes, rarely polygamous by 

 abortion. 



§ 1. Succulent, aphyllous shrubs. 



104. E. alata, Hook. ! Unarmed, articulated, branched : branches opposite or whorled, 

 oblong-linear, complanate-2-winged ; umbels contracted, terminal and lateral, bibracteate, 

 twice (or once) 3-rayed : universal ones sessile, partial shortly pedicellate ; involucre few- 

 flowered, with 5 petaloid appendages and fringed interior lobes.— Hook. Ic. I. 700. — Habit 

 of Viscum opuntioides : woody below : iuternodes 2"-8" long, 2'" broad — Hab. Jamaica !, 

 Pd., in rocky woods, Manchester. 



§ 2. Shrubs ; leaves opposite or whorled? long-pelioled, equal at the base, quite entire : 

 petiole articulated at the sheathing base: stipules glanduliform, inconspicuous. 



105. E. nudiflora, Jacq. Branches cylindrical, with distant, deciduous foliage ; leaves 

 opposite (or ternate), ovate, elliptical, or elliptical-lanceolate, blimtish, glabrous or subciliate; 

 cymes terminal and axillary, subsessile, several times dichotomous ; involucre with 5 peta- 

 loid, crenate appendages and fringed interior lobes ; capsule glabrous, long-exserted, nodding ; 

 seeds ecaruuculate, ovoid-oblong, irregularly wrinkled-tubercled. — Jacq. Ic. Rar. t. 479. — ■ 

 E. graminea, Sw. (non Lin.). — A dichotomous or trichotomous shrub, 10'-1' high, leaves 

 2"-l" long : petiole 6"'-4"' long, usually as long as the cymes ; seeds 1'" long. — Hab. Ja- 

 maica!, Al., March, Wils., common on limestone; S. Vincent!, Guild.; [Mexico!]. 



106. E. cotinifolia, L. Branches cylindrical, thickened at the nodes ; leaves opposite 

 or ternate, ovate or ovate-roundish, bluutish, subcordate at the base, glabrous, glaucous 

 beneath, as long as or exceeded in length by the petiole ; cymes terminal, peduncled, tricho- 

 tomous ; involucre with 5 petaloid, quite entire appendages, and cut interior lobes; capsule 

 glabrous ; seeds ecarunculate, ovoid, irregularly wrinkled. — Hook. Exot. t. 59. — A high 

 shrub ; leaves 2"-l" long : petiole 3"-l" long, with stipular glands at the node. — Hab. Bar- 

 badoes!, Lane; Trinidad!, Lockh. ; [Venezuela!, New Granada!, Guiana!]. 



§ 3. Shrubs ; leaves opposite or whorled, shortly petioled, itiserted on the inner side 

 of a spreading stipular sheath. 



107 •' E. vaginulata, Gr. (n. sp.). Branchlets densely ringed with aphyllous, ciliolate, 

 bilobed sheaths; leaves opposite or ternate, inserted into the uppermost or superior sheaths, 

 small, fleshy, spathulate-linear, quite entire, glabrous, or with a few haus on the midrib be- 

 neath, much longer than the puberulous petiole ; peduncles simple, short, terminal ; involucre 

 with minute, rounded appendages ; capsule glabrous, nodding : styles simple ; seeds ecaruncu- 

 late, globose, smooth, ash-colour, red. — A low, branched shrub : nodes annular, 2"'-4'" distant 

 from each other ; branchlets 2'" long, covered entirely with the rounded, spreading sheaths, 

 or the uppermost internodes sometimes developed : leaves 2"' long, %'" broad, veinless : pe- 

 tiole scarcely exserted from the sheath ; peduncles almost wholly immersed in the upper- 

 most sheath , involucral glands blackish, contiguous, a little exceeded by the cut lobes ; pedicel 

 of ? exserted; capsule scarcely 1'" diam., contracted in the sutures. — Hab. Turk Islands!, 

 Hjulm. 



