30 FLORA OF JAMAICA Lacistema 



a little shorter than, the endosperm, straight ; cotyledons foli- 

 aceous, about as long as the radicle. 



One genus with 17 species, all natives of tropical America, 

 from the West Indies and Mexico to Brazil and Peru. 



LACISTEMA Sw. 



L. aggregatum comb. nov. — L. myricoides Sw. Prodr. 12 

 (1788), Fl. Ind. Occ. 1093, t. 21 & Icon. PL t. 1 ; Schnizl. in Fl. 

 Bras. iv. pi. 1, 282, t. 81,/. 3; Griseh. Fl. Br. W. Ind. 25; 

 A. DC. Prodr. xvi.pt. 2, 591. Piper aggregatum Berg, in Act. 

 Helv. vii. ISl, t. 10 (1772). P. fasciculare Budge PL Guian. t. 4 

 (1805). (Fig. 4.) 



Wright ! Swartz ! Purdie 1 Bath, Wilson ; Moneague, Prior ! March ; 

 Dolphin Head; near Troy, 2000 ft.; Harris [ John Crow (Blake) Mts., 

 Harris & Brittonl Fl. Jam. 10,308, 10,675, 10,740; Union Hill, near 

 Moneague, Britton d Hollick, 2805 ! — Central America and tropical S. 

 America. 



Small tree 15-20 ft. high. Leaves elliptical or elliptical-oblong, shortly 

 acuminate, entire, glabrous, 8-11 cm. 1., 3-5 cm. br. ; stalk '5 cm. 1. Spikea 

 greenish-yellow, as many as seven in each axil, generally longer than the 

 petiole. Sepals 4, irregularly ovate, serrulate, the anterior sometimes 

 obovate. Disk ample. Fruit ellipsoidal, 6-8 mm. 1. 



[Family SALICACE^. 



Trees or shrubs. Leaves alternate, penniveined. Stipules 

 free. Flowers dioecious, in catkins, solitary in axil of each bract. 

 Perianth wanting. Male flowers : stamens 2 to indefinite, on the 

 receptacle. Female flowers : ovary 1-celled, with 2-4 parietal 

 placentas. Ovules ascending, anatropous. Capsule 2-4 valved. 

 Seeds numerous, small, densely hairy. Endosperm wanting. 

 Embryo straight ; cotyledons flattish, equal ; radicle very short, 

 inferior. 



Species about 200, mostly in the north temperate zone ; a 

 few tropical. 



SALIX L. 



Catkins dense, erect, with sessile flowers. Disk of 1-2 glands. 

 Ovary with 2 placentas. Ovules 4-8 on each placenta. Capsule 

 2-valved. 



Species about 1 70, with distribution of the Family. 



Willow. 



S. chilensis Molina Sagg. Star. Nat. ChlL 169 (1782).— S. Hum- 

 boldtiana Willd. Sp. PL iv. 657 (1805) ; Kunth in H. B. & K. Nov. 

 Gen. dt Sp. a. 22, tL 99-100 ; Leyhold in Fl. Bras. iv. pt. 1, 227, 

 ^ 71 ; Griseh. FL Br. W. Ind. 113. 



