348 FLOKA OF JAMAICA Peililanthus 



truncate at the apex ; main lobes broad, lateral strap-shaped, free for only 

 about 1-3 mm. from apex, hairy along the margins, fifth lobe spathulate- 

 strap-shaped, free about 3 mm. from apex, fringed. Appendix about 

 G mm. 1. Capsule minutely puberulous, about 5 mm. 1. Seeds about 

 3*5 mm. 1., ellipsoidal, apiculate. 



2. P. jamaicensis Mills}), di; Britton in Field Gpl.Mus. Bot. ii. 

 356 (1913); leaves obovate to oblanceolate, narrowed to the 

 short petiole, minutely puberulous or glabrate, 3-10 cm. 1. ; 

 involucres glabrous within and without, but ciliate on margins ; 

 male and female pedicels glabrous. — P. tithymaloides J'oit. var. 

 angustifolius Griseb. (Fig. 114, a, b.) . Type in Herb. N. York 

 Bot. Gard. 



Swartz ! Distin ! Negril, woods near lighthouse, Britton and HoUick, 

 2067 ; also Harris ! Fl. Jam. 10,238. 



Trailing shrubby plant, with stems 10-12 ft. in length, glabrous. 

 Cyines terminal and axillary. Involucres about 1 cm. 1., scarlet; tube- 

 wall thin, the fissure open down to the appendix ; notch about one-fourth 

 the length of the tube, main lobes ovate, free part broad, rounded, lateral 

 rectangular-oblong, about 2 mm. free at apex, median lobe about 3 mm. 

 free, all ciliate. Appendix 6-7 mm. 1., apex truncate, retuse, margin 

 ciliate. Male flowers exserted pedicels 10-11 mm. 1., filaments about 

 2' 5 mm. 1. Style branches 2-cleft. 



[P. latifolius MUhp. & Britton in Ann. Misfi. Bot. Hard. ii. 

 43 (1915) ; leaves ovate to ovate-orbicular, subsessile, apex acute, 

 base roundish or subcordate, glabrous, 11 '5 cm. 1. or less;. 

 involucres glabrous without and within ; male and female 

 pedicels glabrous. 



Near Bath, Britton, 3491. — Cuba, Hispaniola, Mona, Bermuda. 

 Perhaps indigenous at Sanchez, S. Domingo ; at all the other localities 

 an evident escape from cultivation, or in gardens (Millsp. and Britton). 



Shrubby, about 6 ft. high, young branches zig-zag, puberulent. Cyines 

 terminal. Involucres about 2 cm. 1. ; main lobes lanceolate-oblong, 

 rounded obtuse, lateral about equal, all ciliate, median lobe clongatc- 

 ligulate, truncate, ciliate, somewhat shorter than the lateral lobes and 

 nearly closing the fissure of the tube. Appendix about one-third the 

 length of Lhe tube, split for half its length into two fleshy ligulato slightly 

 grooved and emarginate lobes.] 



Family CALLITRICHACE^. 



Species of Callitriche are found in Cuba and Hispaniola, and 

 it is possible that the genus may occur in Jamaica. They are 

 small terrestrial or aquatic plants with simple entire opposite leaves. 

 The flowers are minute, unisexual, axillary, solitary, without 

 sepals or petals, but generally with two bracts. The male flower 

 consists of a single stamen ; the female of a 4-celied ovary with 

 two styles, each cell containing one pendulous ovule. The fruit 

 is indehiscent, 4- celled, 4-seeded. The seeds are pendulous, with 

 fleshy endosperm ; embryo axile, terete. 



