Porana.] XC. CONVOLVULACEiE (baker and rendle). 85 



usually forked. Stigmas capitate. Fruit small, subglobose, 1 -seeded, 

 indehiscent or finally splitting. Seeds glabrous ; cotyledons plicate. 

 Stems wide-climbing. Leaves entire, usually petioled and cordate. 

 Flowers purple, blue or white, generally very small, numerous, often 

 (including the African species) panicled. 



Species 10, the others spread through Tropical Asia to North Australia. 



1. P. densiflora, Ilallier f. in Engl. Jahrb. xviii. 93. Stems 

 woody, climbing, glabrous. Leaves petioled, ovate, apex obtuse to 

 acuminate, cuspidate, base entire to slightly cordate, glabrous, thin 

 and membranous when dry, 2-3 in. long, l^-lg- in. broad. Flowers 

 very small, congested in clusters at the end of the main axis and 

 branches of stalked axillary panicles, and forming a terminal panicle at 

 the end of the branch. Younger portion of inflorescence and pedicels 

 covered with pale brownish adpressed somewhat silky hairs, which occur 

 also on the backs of the sepals and densely cover the unopened corolla. 

 Sepals equal, barely 1 lin. long, coriaceous, orbicular. Corolla very 

 small (i— 4 in. long), broad funnel-shaped ; lobes lanceolate-oblong, 

 emarginate, with broad membranous margins, strongly limited from the 

 hairy midpetaline area. Styles 2 ; stigmas capitate ; ovary globose, 4- 

 ovuled. Fruit not seen. 



Wile land. British East Africa : Rabai Hills, near Mombasa, Taylor ! 

 between Mombasa and Witu, Whyte ! 



IHozamb. JJist. German East Africa : Usambara ; Duga, Hoist, 3205 ! 

 Buiti, Hoist, 2379 ! Kiriamo, ex Dammer; and without precise locality, Fischer, 

 284. 



14. JACQUEMONTIA, Choisy ; Benth. et Hook. f. Gen. PL ii. 874. 



Sepals subequal, or the outer broader, sometimes cordate at the base. 

 Corolla funnel-shaped, 5-angled, obscurely 5-lobed. Stamens inserted 

 low down in the corolla-tube ; filaments filiform or slightly dilated at 

 the base ; anthers oblong. Ovary 2-celled, 4-ovuled ; style entire, 

 filiform ; stigmas 2, distinct, elliptic to orbicular, thick. Capsule 

 globose, 2-celled, 4-valved. Seeds glabrous, scabridulous in the African 

 species. — Herbs or shrubs, with twining or prostrate glabrous or hairy 

 stems. Leaves usually cordate-ovate, entire. Flowers usually cymose 

 or capitate, small, blue or white. 



Species 60 or more ; the others American, 

 Flowers densely crowded in heads. 



Corolla blue, twice as long as the calyx . . . 1. J. capitata. 



Corolla white, equal to the calyx . . . . 2. J. thomensis. 



Elowers in few- to many-flowered cymes. 



Leaves more or less oval . . . . . 3. J. ovalifolia. 



Leaves cordate-ovate . . . . . . 4. J. paniculate 



1. J. capitata, G. Don, Gen. Syst. iv. 283. Annual. Stems 

 slender, twining or trailing, finely pilose. Leaves ovate, generally acute, 

 2-3 lin. long, base shallowly cordate or flat to shortly abruptly acute 



