190 XXV. MALVACE-E (MASTERS). [Pavonia. 



A rather large genus, whose species are met with in the tropics of both hemispheres, the 

 islands of the Pacific, and even in Australia. 



Epicalyx of 5-6 segments. (Sect. Lehretonia) 



Carpels muricate 1. P. procumberis. 



Carpels smooth. 



Segments of the epicalyx broad, exceeding the calyx . . . 2. P. macrophylla. 

 Segments of the epiealyx narrow, shorter than the calyx . . 3. P. Meyeri. 

 Epicalyx of 6-12 segments. 

 Carpels prickly or awned. 



Prickles softish, reflexed 4. P. hirsuta. 



Carpels with 2 stout awns 5. P. propinqua. 



Carpels with 3 awns 6. P. Schimperiana 



Carpels smooth, neither prickly nor awned. 

 Carpels winged. 



Carpellary wings narrow 7- P. zeylanica. 



Carpellary wings broad. 



Bractlets 10-12, slightly exceeding the calyx .... 8. P. Koischyi. 



Bractlets 15-20, very long 9. P. clathrata. 



Carpels entirely without wings. 



Leaves entire or nearly so 10. P. arabica. 



Leaves palmately divided, downy beneath 11. P. odorata 



1. P. glechoxnsefolia, Rich. Fl. Abyss, i. 54. A rigid procumbent 

 plant, with slender hirsute branches. Leafstalks as long as the blades, which 

 are cordate-roundish, somewhat 3-lobed, the central lobe longest, crenate- 

 serrate, hairy on both surfaces. Stipules linear. Peduncles slender, axillary, 

 1-flowered, as long as or longer than the petioles, jointed near the top. Epi- 

 calyx of 5-6, spreading, oval or lanceolate; segments exceeding the calyx. 

 Corolla yellow, longer than the epicalyx. Carpels 5, oblong, obtuse, some- 

 what woody, muricate, sometimes having a dorsal, serrulated crest. — Ui-ena 

 glabra, R. Br. in Salt» Abyss. App. 65. Lebretonia procumhens, Wight 

 and Am. Prod. Fl. Tnd. i. 47. Lebretonia cordata, Hochst. PL Schimp. 

 Abyss. 



Nile Iiand. Abyssinia, Salt ! Schimper ! Kordofan, Cienkowski. 

 Mozaxnb. Distr. Lupata, Zambesi, Br. Kirk ! Senna, Peters. 

 The form and size of the leaves and the spiny tubercles are subject to much variation. In 

 Abyssinia the plant is said to close its flowers after noon. 

 The species occurs in India, Ceylon, Arabia, etc. 



2. P. macrophylla, E. Mey. ; Harv. and Sond. M. Cap. i. 169. A 

 tall, erect, pilose, branched herb or undershrub. Leaves on long stalks, oval, 

 cordate acuminate, sometimes somewhat 3-lobed, coarsely and irregularly 

 crenate-serrate, pubescent ; nerves prominent below and ciliolate. Peduncles 

 slender, axillary. 1-flowered, as long as or longer than petiole, jointed above. 

 Epicalyx of 5 or rarely 7, foliaceous, elliptic, acute segments, exceeding the 

 sepals in length. Petals pink, three times the length of the calyx. Carpels 5, 

 obovate, with prominent reticulated nerves. Styles 8-10. Seed solitary in 

 each carpel, reniform, smooth, ascending. — TJrena mollis, R. Br. in Salt, 

 Abyss. App. 65 ; Hophst. PI. Schimp. Abyss. P. (Lebretonia) crenata, Hochst. 

 PI. Schimp. Abyss. Lebretonia acuminata, Rich. Fl. Abyss, i. 53. t. 13. 



Nile Land. Abyssinia, Salt ! Pearce ! Schimper ! Plowden ! Roth ! "White Nile, v. 

 Marnier ; Uganda, Speke and Grant ! 



South Central. Lake Ngami, JW'(?ai^/ 



