82 MALVACEJS. 



ovata, urticifolia, and trinervis, ej.) ; it is however distinguished from the latter genus by 

 the involucel, the dorsal dehiscence of the carpids, and the habit of Pavonia. 



38. P. bracteosa, Benth. Shrubby, tomentose ; leaves cordate-roundish, irregularly 

 crenate-toothed, whitish beneath ; flower-heads axillary, peduncled, encircled by roundish, 

 involucral leaves; involucel 10— 12-1 caved: leaves nearly equalling the calyx, with a minute, 

 oblong-lanceolate, subpeltate limb ; petals . . ., twice exceeding the calyx ; carpids glabrous, 

 obovate, incurved at the top, convex and keeled on the back, erostrate. — Malachra trinervis, 

 Prl. — Petals 6'" long; carpids 1''' long and broad. — Hab. Trinidad!, Cr., at Cocarite; 

 [Guiana, Ceara, Bahia]. 



Sect. 2. Typhalea. — Involucel 5-15-fld. Carpids dehiscent along the ventral (or at length 

 also along the dorsal) line, and without a central torus. — Leaves scabrous with pellucid 

 dots ; flowers fascicled : fascicle involucred. 



39. P. typhalea, Cav. (Diss. 2. non 6). SufFrutescent ; leaves oblong, serrate; fascicles 

 terminal and axillary : peduncles distant, inferior elongated, superior decrescent, leafless : 

 pedicels nearly the length of the involucel; involucel deeply 5-8-fid: lobes lanceolate, 

 acuminate, somewhat exceeding the calyx ; petals white ; carpids glabrous, convex on the 

 back, triaristate : awns terminal, distant from each other, retrorsely barbed, scarcely half 

 thelength of the carpid. — Urena, L. (ex. synon. P. Br.) et Sw. — Petals 5"'-6'" long, twice 

 the length of the calyx ; carpids (without the awns) 3'" long. — The section Typhalea con- 

 tains a scries of nearly allied and variable species, the synonymy of which is not to be made 

 out without the original specimens of the authors, who in their descriptions have neglected 

 the specific characters observable in the fruit. The present species, confounded by Cava- 

 nilles with P. typhaleoides, Kth., is chiefly to be recognized by the small carpids, and by 

 the infraterminal, short -peduncled, few or 1 -flowered fascicles ; the shape of the leaves, the 

 proportion of the involucel to the calyx, and the length of the carpid-awns are subject to 

 variation. — Hab. Jamaica!, Pd., Bancr., Al., common in moist woods; [Portorico!; Pa- 

 nama!, Venezuela!}. 



40. P. typhaleoides, Kth. Suffrutescent or shrubby ; leaves elliptical or oblong, cre- 

 nate-serrate ; fascicles terminal, subsolitary : pedicels half the length of the involucel ; invo- 

 lucel deeply 5-fld: lobes ovate and subulate, half as long again as the calyx; petals 

 " yellow " (Cav.) ; carpids glabrous, convex on, the back, triaristate : awns terminal, approxi- 

 mate to each other, retrorsely barbed : the middle one longer, and at least as long as the 

 carpid. — Cav. Diss, t. 197. — P. typhalea posterior, Cav. (Diss. 6. p. 350). P. surinamensis, 

 Miq. — Petals about 8'" long, twice the length of the calyx ; carpids (without the awns) 4'" 

 long. — Hab. Trinidad!, Cr. ; [Panama!, New Granada!, Venezuela!, Brazil!]. 



41. P. castaneifolia, St. Hil, Naud. (Ann. Sc. Nat. II. 18. p. 44). Suffrutescent (?) ; 

 leaves elliptical-lanceolate, acuminate at both ends, irregularly toothed-serrate ; fascicles ter- 

 minal, solitary : pedicels half the length of the involucel; involucel §-\4>-fid: lobes lanceo- 

 late, acuminate, at least three times as long as the calyx ; petals . . . ; carpids oblong, glabrous, 

 flat and keeled on the back, triaristate : awns terminal, distant from each other, and some- 

 what divergent, retrorsely barbed, the middle one longer, and as long as the carpid. — Carpids 

 4 i'" long. — Hab. Trinidad!, Cr., near Tamanaco and Arena ; [Brazil]. 



Sect. 3. Eupavonia. — Involucel 5-15-leaved. Carpids indehiscent. — Flowers 

 solitary, racemose, or corymbose. 



42. P. spinifex, Cav. Shrubby ; leaves subcordate, serrate, with a scattered stellate 

 down ; peduncles axillary, 1 -flowered ; involucel-leaves distinct, 6-8, oblong-linear, equal- 

 ling the calyx ; petals yellow, 2-3 times exceeding the calyx, and exceeded by the column ; 

 carpids glabrous, trispinose: spines. stiff, of equal length, divergent, retrorsely barbed: one 

 infraterminal, two inserted to the middle of the margin. — /acq. Jmer. Pict. t. 185 ; Cav . 

 Diss. t. 4,5. f. 2, 3.— Hibiscus, L. Pav. aristata, Cav. — A shrub, 5'-15' high, variable in 

 the shape and down of leaves; petals 12'" long. — Hab. Jamaica!, Macf., Dist., Pd., AL, 

 March, sparingly in the limestone districts ; S. Kitts !, Antigua !, Nichols. ; S. Lucia !, 

 Anders.; [Cuba!; Panama! to Peru! and Brazil!]. 



43. P. microphylla, Casar. Shrubby; leaves small (4"'-6'" long), roundish or oval- 



