14 FLOKA OF JAMAICA Trifolium 



longer than the leaves. Flowers shortly stalked, at length deflexed. Calyx 

 glabrous, half as long as the corolla, with lanceolate erect unequal teeth. 

 Pod 4-6-seeded. 



[T. dubium Sihth. Fl. Oxon. 231 (1794); stem prostrate; 

 flowers yellow in small heads. — T. filiforme Macf. lac. cit. (non L.) ;. 

 Griseh. loc. cit. T. minus Belhan FL Cantab, ed. 2, 290 (1802). 



Shamrock. 



Common in the mts., Macfadyen ; McNahl Wilson; Morris \ Mrs. 

 Espeut ! Blue Mt. Peak, Hitchcock. — N. America, naturalized from Europe. 



Annual, stem slender. Leaflets obovate, cmarginate, serrulate, the 

 middle leaflet stalked, 4-7 mm. 1. Floivers yellow, about 12 in close heads. 

 Standard truncate, covering the pod.] 



§ 3. Herbs (woody below) or shrubs, not twining, sometime^ 

 arborescent (in Seshania). Leaves imparipinnate or 

 abruptly pinnate (in Seshania), petiole not bearing a 

 tendril, leaflets entire. Flowers in racemes, axillary, 

 terminal, or opposite the leaves. Stamens 10, the upper- 

 most free, or more or less free, the rest united into a 

 sheath, split above. Pod 2valved, or sometimes scarcely 

 opening (in Seshania). 



3. INDIGOFERA L. 



Shrubby herbs or shrubs ; hairs often attached by the middle. 

 Leaves imparipinnate (in Jamaican species), sometimes with 1 or 

 2 leaflets only in I. lespedezioides. Flowers in racemes, axillary 

 (in Jamaican species), variegated-purplish. Calyx 5-cleft. 

 Standard roundish, often persistent ; keel usually with a spur on 

 each side. Uppermost stamen free, the rest united into a slender 

 persistent sheath ; anthers apiculate. Pod narrow, cylindrical, 

 4-angled or flat-compressed, with partitions between the seeds. 



Species 350, dispersed through the warmer regions of the 

 world, most numerous in southern and tropical Africa. 



Pod straight or only slightly curved, with 8-15 seeds. 

 Leaflets in 4-6 pairs, oblong-obovate to roundish- 



obovate. Racemes shorter than the leaf 1. I. tinctoria. 



Leaflets in 2-3 pairs, elliptical. Bacemes longer 



than the leaf. 3. I. suhulata. 



Leaflets 1 or 2 or in 1-4 pairs, cuneate-oblong. 



Racemes as long as or longer than the leaf 4. I. lespedezioides. 



Pod sickle-shaped, with 3-6 seeds 2. I. suffruticosa. 



1. L tinctoria L. Sp. PL 751 (1753); leaflets in 4-6 pairs, 

 oblong-obovate to roundish-obovate, apex rounded, mucronulate, 

 glabrous on the upper surface, strigillose beneath ; racemes 

 shorter than the leaf ; pods slightly curved or straight, with 

 8-12 seeds.— Wright Mem. 293 (? I. sufiruticosa) ; DC. Prodr. ii. 

 224 (excl. (3) ; Macf. Jam. i. 245 ; Bentl. d- Trim. Med. PI. L 72 ; 



