Dinophora.] lvii. melastomaceje (hooker). 445 



cordate, membranous, sharply ciliate-serrulate. Flowers in lax, ter- 

 minal, spreading panicles ; pedicels long, slender ; bracts minute. 

 A single species. 



1. D. spenneroid.es, Benth. in Fl. Nigr. 355. Stem 3-5 ft., base 

 woody, much branched ; branches herbaceous, 4-gonous, usually glan- 

 dular-ciliate at the nodes. Leaves unequal, 2-4 in., acute or acuminate, 

 5-7-nerved, with a few scattered cilia above ; petiole of one leaf usually 

 J in., of the other about twice as long. Panicle with very slender, 

 divaricating" branches, floriferous at the tips and axils ; pedicels \-\ in. ; 

 bracts subulate. Calyx \ in., smooth, mouth rather contracted. Ovary 

 included. 



Upper Guinea. Fernando Po, Fl. Nov.-Dec, Vogelt 



6. TRISTEMMA, Juss. ; Benth. et Hook. f. Gen. Plant, i. 746. 



Calyx ovoid or oblong, glabrous, naked, or with 1 or more rings of 

 bristles ; lobes 5, persistent, reflexed. Petals 5, obovate. Stamens 10, 

 equal or subequal ; anthers all similar, narrowly linear-oblong, pore 1 ; 

 cells undulate ; connective not or very shortly produced at the base, 

 where it is 2-tubercled in front. Ovary half-adherent, 5-celled, top 

 setose ; style filiform, curved, stigma simple. Capsule or berry burst- 

 ing irregularly, rarely 5-valved at the top. Seeds minute, cochleate. — 

 Shrubs, erect or prostrate, branched, often setose, branches 4-angled. 

 Leaves petioled, elliptic or ovate or acute, quite entire, 5— 7-nerved. 

 Flowers sessile, terminal, 1-3, or many panicled ; bracts many, large ; 

 enclosing the flower and fruit, very persistent. 



An African genus, also found in Madagascar. 

 Flowers solitary. 



Shaggy, with spreading hairs . 1. T. involucratum. 



Strigose, with scattered appressed hairs 2. T. coronatum. 



Flowers capitate. 



Strigose, with "scattered appressed hairs 3. T. Schumacheri. 



r, with appressed hairs 4. T. hirtum. 



1. T. involucratum, Benth. in Fl. Nigr. 354. Procumbent, dif- 

 fusely branched, crinite or hirsute with spreading or recurved, flexuous, 

 stout hairs or bristles, especially on the branches. Leaves 1J-3 in. by 

 1-1J in., elliptic or elliptic -ovate or lanceolate, acuminate, quite entire 

 5-nerved, hairs spreading on both surfaces, petioles slender, curved, 

 1-1 in. densely crinite. Flowers solitary, subsessile, closely enveloped 

 in 2-3 outer leafy and many inner obtuse, coriaceous bracts, which are 

 bristly above the middle. Calyx J in. j tube ovoid, with a broad ring 

 of bristles about the middle ; lobes 5, short, broadly ovate, obtuse or 

 acute, ciliate. Petals obovate, J in. long. Anthers | in., nearly straight, 

 connective shortly produced. Top of ovary strigose. — Melast. invo- 

 lucrata, Don, in Mem. Wern. Soc. iv. 290. DC. Prod. iii. 147. 



Upper Guinea. Sierra Leone, AfzeliusI Bon! Barter! Fl. May. 



