276 



I I.OKA OF JAMAICA 



Croton, 



Monoecious ; leaves 2-10 cm. 1. ; glands at 



base of leaf. 

 Leaves 2*5-6 cm. 1., narrowly lanceolate 



or linear-oblong 3. C. Priorianus. 



Leaves 2-10 cm. 1., ovate-lanceolate to 



ovate 4. C.flavcns. 



Glands wanting at base of leaf and on petiole. 

 Leaves 3-5 cm. 1. densely silvery tomentose 



beneath, mixed with scales 5. C.micans. 



Leaves pubescent with stellate hairs, or 



glabrous beneath. 

 Female calyx convex, with edges not 



folded back. 

 Leaves to 3*5 cm. 1., oval-elliptical to 



oblong-elliptical 6. C. ovalifolius. 



Leaves 4-10 cm. 1., lanceolate-elliptical 



to oblong-elliptical 7. C.lucidus. 



Female calyx angular, with base of seg- 

 ments folded back outwards. 

 Leaves 7-18 cm. 1., broadly elliptical to 



oblong-elliptical 8. C. laurinus. 



Leaves with silvery scales beneath 9. C. glabellus. 



Margin ciliate with glands 10. C. humilis. 



Leaves serrate or serrulate. 



Stipulate ; glands at base of leaf or apex of 

 petiole (sometimes wanting in C. populi- 

 folius}. 

 Racemes 1-2 dm. 1. 



Leaves with numerous stellate hairs 11. C. corylifolius. 



Leaves with few stellate hairs. 



Stipules 5-10 mm. 1., cut into linear 



gland-tipped segments 12. C, populifolius. 



Stipules small, inconspicuous 13. C. Wil&onii. 



Racemes to 3 cm. 1., flowers crowded. 



Glands at base of leaf saucer-shaped 14. C. glandulosus. 



Glands long-stalked, 1' 5-2 rnrn. 1 15. C.hirtus. 



Stipules and glands wanting. Racemes 2-4 cm. 1. 16. C. Griesbacliianus. 



1. C. linearis Jacq. Sel Stirp. Amer. 256, t. 162, /. 4 & 

 Ed. pict. 124, t. 263, /. 80; dioecious; leaves 5 -5-2 -2 cm. 1., 

 1 -5 mm.-l '5 cm. br., linear-oblong, usually obtuse at both ends, 

 margin entire, upper surface glabrous, often roughish with minute 

 points, beneath densely covered with yellowish tomentuin of flat 

 stellate hairs ; usually with two or three cylindrical glands at 

 apex of petiole on upper surface (often others minute) ; nerves 

 pinnate, usually slightly prominent but indistinct on upper 

 surface, not obvious beneath. Geisel. Grot. Monog. 6 ; Bennett in 

 Journ. Proc. Linn. Soc. iv. 30 ; Daniell in Journ. Pharm. Soc. iv. 

 229, with tab., figs. 2, 3, 7 ; Muell. Arg. in DC. Prodr. xv. pt. 2, 

 615. C. linearis var. dilatatus Urb. Symb. Ant. v. 385 (1907). 

 Croton fruticulosum foliis longis &c. Browne Hist. Jam. 347. 

 C. Cascarilla L. Sp. PL ed, 2, 1424 (1763) (excl. Catesb. Car.) 

 & Herb.; Woodv. Ned. Bot. ed. 3, 629, t. 222; Geisel. Grot. 



