AROIDEJJ. 511 



connate at the middle. Ovaries " cohering, 2-1-celled: ovule single, anatropous." Seeds 

 " exalbuminous." — Stem scandent ; leaves approximate at its summit, the perfect pedati- 

 3-7 -parted ; veins joined by inconspicuous arches : j>etiole long, icing ed-sheat king below; 

 spathe coloured. 



20. S. auritum, Schott ! Leaves pedati-5 -partite : middle segment large, ovate or 

 ovate-oblong, exterior cohering, obovate-oblong or oblong-elliplical, blunt ; spathe " greenish- 

 yellow with purple spots" (Jacq.) : lamina ovate-oblong, lower sheathing part cylindrical. — 

 Plum. Descr. t. 58, 51, c. Jacq. Schoenbr. 2. t. 191. Desc. Ft. 3. t. 231.— Arum, L. S. 

 Plumierii, Schott. — First lateral pair of leaf-segments 3"-2", second 6"-4", middle segment 

 12"-8", spathe 6"(-10"), sheathing part of it 2"(-3"), spadix 4"(-6") long.— Hab. Jamaica!, 

 all coll., on trees; [Haiti to Brazil]. 



8. ACONTIAS, Schott. 



Spadix of Philodendron, acumiuate •. spathe of Syngonium. Anthers connate at the mid- 

 dle. Ovaries distinct below, compound : cells several-ovulate : ovules anatropous." — Stem- 

 less herbs; leaves pedatiparlile : veins joined by arches-, petiole long, sheathing, margined 

 at the base ; spathe greenish-yellow. 



21. A. helleborifolius, Schott. Leaf-segments 1 1-7, lanceolate-oblong, pointed, ex- 

 terior smaller. — Schott, Gen. t. 47 : anal. Jacq. Ic. Bar. t. 613. — Arum, Jacq. — Middle 

 leaf-segment 6''-3", spathe 5" long, its tubular base ventricose. — Hab. Dominica !, Imr. ; 

 [French islands; Panama!, Guiana!, Brazil!]. 



9. XANTHOSOMA, Schott. 



Character of Acontias, but anther-cells adnate to an entire, common column. — Herbs ; 

 leaves sagittate, arch-veined : stronger veins straightish, distant ; spathe coloured. 



22. X. atrovirens, C. Kth. At length caulescent ; leaves livid-green beneath : basilar 

 lobes bluntish with the backward bent vein-pair naked at the narrow sinus : stronger veins 

 6-9-jugal : arch distant from the margin : spathe bluntish, little longer than the blunt 

 spadix. — SI. t. 106. f. 2. — Arum sagittitblium, £., ex parte. — Leaves l'-lj' long, 10"-12" 

 broad ; spathe 7" long. — Hab. Jamaica !, Dist., cultivated {SI.); [Venezuela]. 



23. X. sagittifolium, Schott. At length shortly caulescent; leaves large, green : ba- 

 silar lobes pointed, with the backward vein-pair naked at the broadly open sinus : stronger 

 veins 8-jugal : ar;-h distant from the margin ; spathe greenish-yellow, acuminate, exceeding 

 the bluntish-aenminate spadix. — Desc. Fl. 8. t. 533. — Arum, L., ex parte. — Leaves 1^' 

 long ; spathe 8", spadix 6" long. — Hab. Jamaica (Desc), Barbadoes (L.) ; [Cuba to French 

 islands!]. 



24. X.? peregrinnm, Gr. " Stemless:" leaves large, green; basilar lobes roundish, 

 with the backward bent vein-pair naked at the broadly open sinus : stronger veins 8-jugal : 

 arch marginal. — Arum, L. — Leaves 2' long or more. — Hab. Jamaica (SI., L.) along moun- 

 tain-rivulets : [Guadeloupe!; Venezuela], 



10*. COLOCASIA, Schott. 



Spadix free from the persistent, sheathing spathe, naked at the base and at the summit, 

 $ below, <J above, bearing sterile organs between ? and c? . Anther-cells adnate to the sub- 

 entire column. Ovaries distinct, 1 -celled : ovules oo, parietal. Seeds "albuminous." — 

 Tuberose herbs; leases peltate, arch-veined ; spathe "yellowish." 



25*. C. escnlenta, Schott. Stemless ; leaves cordate-oblong, pointed, with blunt ba- 

 silar lobes and a narrow sinus. — SI. t. 106. f. 1 : a leaf. Jacq. Schoenbr. 2. I. 186. — Arum, 

 L. (non A. Colocasia, L. ex Catesb.) A. bicolor, Jacq. C. antiquorum, Schott. — Leaves 

 6"-14" long, often reddish-variegated above; spathe 3"-4" long; spadix "odorous." — 

 Hab. Naturalized in Jamaica, S. Kitts !, cultivated in all islands ; [introduced from the East 

 Indies I]. 



