44 



FLORA OF JAiMAICA 



Dorstcnia 



1. D. cordifolia Sic. Prorir. 31 (1788) ; leaves cordate. Sw. Ohs. 

 Bot. 51, <. 7,/. 2 tk FL Lid. Occ. 275 ; Griseb. FI. Br. W. Ind. 154. 

 (Fig. 12.) 



Near Dolphin Head, Purdicl Near YS, Wnllschlaegel, 131G ! Tyre, 

 near Troy, 2400 ft. ; road from Askenish to Dolphin Head, 1000 ft, Harris ! 

 Fl. Jam. 8G90, 8808, 926G. 



Rhizome nodose, long, rooting along its whole length. Leaves ovate- 

 roundish, ovate or elliptical, cordate at hase, apex obtuse, rough, sometimes 

 with scattered tuberculate hairs above, pubescent underneath on the 

 nerves, limb 3-G'5 cm. 1., 2-4*5 cm. br. ; petioles 4 -5-12 -5 cm. 1., slender, 

 pubescent. Ilcceptacles peltate, 8-10 mm, in diam. ; margin with about 

 12 teeth, 2 mm. 1., underneath rough with short rigid hairs ; female flowers 

 in the centre, male flowers near the margin of the receptacle, peduncle 

 about 2 cm. 1. 



Fig. 12. Dorstenia cordifolia Sw. 



A, Plant. 



B, Inflorescence seen from above. 



C, Section through portion of re- 

 ceptacle showing male (,) and 

 female (/) flowers. 



D, Stamen. 



E, Pistil. 



2. D. jamaieensls Britton in Torr. Bot. CI. Bull. xxxv. 567 

 (1908); leaves peltate. 



On vertical limestone cliffs, Somerset, Manchester, Britton 3737 ; Harris 

 & Britton \ Fl. Jam. 10,607. 



Bliizome erect, about 2 cm. 1., 5 mm. br. Leaves ovate to ovate-roundish, 

 peltate below the middle, papillose-rough above, shortly tomentose under- 

 neath, limb 3-5 cm. 1., l'5-4 cm. br. ; petioles .3-12 cm. 1., pubescent. 

 Receptacles peltate, 8-10 mm. in diameter, purplish, puberulent, margin 

 with about 20 teeth '5 mm. 1.; peduncle about 2 cm. 1.; flowers dark- 

 purple. 



4. PSEUDOLMEDIA Tree. 



Trees with milky juice, leaves shortly stalked, entire, 

 thinly coriaceous, penniveined ; stipules intrapetiolar, small, very 

 caducous. Flowers dicecious, male in sessile axillary capitula, 

 female solitary, sessile, axillary, the receptacle of both sexes 

 involucrate with bracts in several series. Male flowers : perianth 

 wanting. Stamens (each representing a flower) numerous on a 



