Malva. MALVACE^. 297 



16. URENA. Flowers often glomerate but not iuvolucrate, each involucellate by a whorl of 

 5 partly united bractlets, connate with base of calyx. Stamineal column short. Mature 

 carpels indehiscent, glochidiate over the entire surface. 



17. PAVONIA. Flowers pedunculate. Calyx involucellate by a whorl of 5 to 15 narrow 

 bractlets. Stamineal column eitlier rather short or elongated. Carpels (in ours indehis- 

 cent) rounded, either muticous and unarmed or 1-3-awned, these awns or spines sometimes 

 retrorsely barbed or glochidiate. 



* * Carpels combined into a globular drupaceous berry, in age the nutlets becoming dry 

 and separating. 



18. MALVAVISCUS. Calyx involucellate with 7 to 12 narrow bractlets. Petals unequal- 

 sided, strongly convolute, and with a lateral lobelet or auricle below, which holds them erect 

 in anthesis. Stamineal column long and slender, exserted, sparsely antheriferous. 



Tribe IV. HIBISCEiE. Carpels or cells of the ovary (3 to 10) of the same number 

 as the style-branches and stigmas. Fruit a loculicidal capsule ; cells opposite the 

 sepals when of the same number ; no central column. Stamineal column antherif- 

 erous along the upper part, but not at the truncate or 5-toothed summit. Stigmas 

 capitate orcapitellate. 



* Style-branches distinct and spreading : seeds mostly reniform. 



19. KOSTELETZKYA. Bractlets of the involucel several or sometimes nearly wanting. 

 Ovary 5-celled, a solitary ascending ovule in each cell. Capsule depressed, saliently 5-angled. 



20. HIBISCUS. Bractlets of the involucel several, sometimes few or almost wanting. 

 Ovary and capsule S-celled ; the cells (rarely 2-locellate by a false partition) 2-many-ovuled, 

 few - many-seeded. 



* * Style undivided, bearing 3 to 5 sessile stigmas at the mostly thickened summit : seeds 

 not reniform ; cotyledons much conduplicate and crumpled. 



21. THESPESIA. Involucel of 3 to 5 small and narrow commonly deciduous bractlets. 

 Calyx truncate or tardily 5-lobed. Capsule nearly indehiscent, woody-coriaceous, 5-celled, 

 few-seeded. Cordate-leaved trees. 



22. OIENFUEGOSIA. Involucel of few or several small or narrow bractlets, or nearly 

 obsolete. Calyx deeply 5-cleft. Capsule loculicidal, of 3 or 4 or rarely 5 cells and valves, 

 few-seeded ; cotyledons not dark-dotted. Shrubby or suffruteseent. 



23. INGENHOUZIA. Involucel of 3 triangular-lanceolate entire herbaceous bractlets, 

 persistent. Calyx saucer-shaped, truncate. Stigma obscurely 3-lobed. Capsule globular, 

 coriaceous, 3-celled, 3-valved ; valves partly villous inside ; seeds 5 to 8 in each cell, tomeu- 

 tulose-puberulent and glabrate ; cotyledons dark-dotted. 



24. GOSSYPIUM. Involucel of 3 ample and cordate laciniate or dentate foliaceous 

 bractlets distinct or united at base, persistent. Calyx truncate or 5-lobed. Stigmas and 

 valves and cells of the capsule 5, rarely fewer ; seeds numerous, very long-woolly, rarely 

 naked ; cotyledons dark-dotted. 



1. MALVA, Tourn. Mallow. (The ancient Latin name.) — Inst. 94, 

 in part; L. Gen. no. 557; Benth. & Hook. Gen. i. 207.^ — Herbs, summer- 

 flowering, with rose-colored or white petals. A genus of the Old World, which, 

 now expurgated of heterogeneous elements (Gray, Gen. 111. ii. 46, 49, t. 116), 

 should the rather include the two following, these differing only in unessential 

 and varying particulars. 



* Flowers only from upper axils, surpassing the subtending leaves, forming a .somewhat 

 racemose or paniculate inflorescence at the summit of stem and branches : petals much 

 longer than calyx : stems erect from a perennial root : radical leaves cordate-rotund and 

 little lobed ; cauline deeply cleft or dissected : escaped from cultivation. 



1 Add E. G. Baker, Jour. Bot. xxviii. 242. . 



