366 XLi. CELASTRACE^ (oliver). [^Campjjlostemon. 



spreading. Stamens 5, inserted in a minute inconspicuous disk around the 

 ovary; filaments incurved; anthers introrse, dehisciufi: transversely, ^-celled. 

 Ovary broad-based, free, 3-celled ; stiguja 3-fid, sessile ; ovules 6-8 in each 

 cell, 2-seriate. Fruit not seen.— A glabrous climbing shrub. Leaves oppo- 

 site, membranous, elliptic-oblong, acuminate, serrulate. Flowers small, 

 sulphur-yellow, in axillary cymes much shorter than the leaves. 



A monotypic genus, confined to Angola. 



1. C. augolensey TFelw. ; Oliv. in Journ. Linn. Soc. x. 44<. Leaves 2- 

 3^ in. long, f-1:^ broad, usually elliptic-oblong or oval, occasionally ovate- 

 lanceolate; petiole slender, -^ in. Cymes many-flowered, under 1 in. 

 Flowers about 2^ lines in diam. 



luoyKer Guinea. Prov. Cazengo, Angola, Dr. IVelwitsch ! 



5. HIPPOCRATEA, Linn. ; Benth. et Hook. f. Gen. PI. i. 369. 



Flowers hermaphrodite. Sepals 5. Petals 5, exceeding the sepals, erect 

 or spreading, imbricate or valvate. Stamens 3 ; filaments recurved or re- 

 flexed at the tip, usually dilated around the ovary below or concealed in 

 lateral notches of the ovary. Anthers various, from quadrate to transversely 

 elongate-oblong, extrorse, rarely subsessile. Ovary surrounded by or raised 

 upon a disk, 3-celled ; style very short or subulate or ; stigma terminal 3- 

 lobulate or subentire, or 'Stigmatic lobes 3, under the margin of the ovary ; 

 ovules 2-10 in each cell, 2-seriate. Fruit-carpels 3, distinct, flat, rarely nearly 

 cylindrical, coriaceous, usually dehiscing along the median line. Seed com- 

 pressed, usually dilated into a broad wingbeloAV, " exalbuminous ; cotyledons 

 flat, connate ; radicle very short, inferior." — Usually climbing shrubs or trees. 

 Leaves opposite, entire or serrate. Flowers in axillary cymes or more rarely 

 terminal cymose panicles, usually small. 



A large tropical genus, occurring in both hemispheres. At least two of the African species 

 are common to tropical Asia. 



Ovules 2 in each cell of the ovary. 



Anthers nearly concealed under lateral stigmatic notches in the 



side of the broadly convex apex of the ovary ....... 1. H. pall ens. 



Anthers conspicuous. Stigma terminal. 



Outer sepals distinctly smaller. Peduncles solitary, axillary, 



elongate ; pedicels in an umbelliforra cyme 1. II. ? longipes. 



Sepals equal or nearly so. 



Ovary raised above the broad disk on a distinct stipes as long 



as itself 3. //. Welwitschii. 



Ovary sessile or nearly so. 



Sepals and petals rotundate. Disk cupuliform. Leaves 



small (1-2 in.) . 4. H. parvifoUa. 



Petals lanceolate or oblong, sides usually infolded . . . b. H. indica. 

 Ovules 4-8. 



Petals valvate in scstivatiou. 



Cymes and young shoots rusty-lomentose. Petals 1-25 hues. 



Ovary sessile ' 6. H. apocytioides. 



Extremities glabrous. Cymes puberulous. Petals iiu. Ovary 



on short thick gynophore ". H. apiculata. 



