510 AROID&E. 



sheathing, at length deciduous. Anthers distinct. Ovary " 1-celled, 1 (-2) -ovulate." Seeds 

 exalbuminous. — Stem arborescent ; leaves rosulate at its summit, sagittate : veins joined by 

 arches near the margin .-, petiole long, margined below to the sheathing base. 



13. M. arborescens, Schott. Stem low, unarmed ; leaf -auricles longer than the mid- 

 rib, with their inner margins parallel at the base. — Plum. Descr. t. 60, 51, g. — Arum, /.. 

 Caladium, Vent.— Stem 5'-6' high (Plum.) ; leaves 8"-10" diam. ; spathe " externally 

 green, white within and purplish at the base, about 6" long." — Hab. West Indies (Plum.), 

 in moist places ; [Guadeloupe!; Guiana]. 



14. M. aeuleata, Crneg. Stem arboreous, usually prickly ; leaf-auricles little longer 

 than the midrib, with their inner margins diverging. — Caladium, Miq. C. arborescens, 

 Mey.!— Stem 10'-25' high; leaves l'diam.; spathe 5"-4" long.— Hab. Triuidad (Cr.), 

 forming thickets in moist places, chiefly near the sea; [Guiana!]. 



6. PHILODENDRON, Schott. 



Spadix free, at length involute by the sheathing spathe, ? below, $ at the summit, bearing 

 sterile organs at the middle. A nthers distinct. Ovary "compound: cells several-ovulate : 

 ovules atropous." Seeds albuminous. — Stem scandent or erect ; leaf-veins numerous, pa- 

 rallel ; spathe coloured, cymbiform above the sheathing base. 



* Leaves entire, \-nerved. 



15. P. lingulatum, Schott! Scandent; leaves alternate, oblong -lanceolate, cuspi- 

 date, rounded at the base : stronger veins 4-8-jugal : petiole margiued to the summit : sti- 

 pules none ; spathe white.— SI. t. 27. /. 2.— Arum, L. (exclus. Syn. PI.) P. Swartzianum, 

 Schott?— Leaves 5"-6" long, 2"-l" broad ; petiole H"-2", spathe 3" long.— Hab. Jamaica !, 

 Pd., March, Wullschl., on trees; [Panama!, Venezuela]. 



16. P. dispar, Schott. Scandent ; leaves alternate, broadly ovate-oblong, mucronate, 

 subcordate at the base, about as long as the petiole : stronger veins 8-12(-" 5 ")-jugal : pe- 

 tiole margined below the summit, with the margin gradually dilated towards the sheathing 

 base: stipules none; spathe "yellowish." — Si. t. 27* f. 3. Plum. Ed. Burm. t. 37- — P- 

 lingulatum, C. Kth. — Leaves 12"-6" long, 6"-4" broad; spathe 6" long: peduncle short. 

 — Hab. Jamaica (SI.) ; [Guadeloupe !]. 



1 7. P. hederaceum, Schott. Scandent ; leaves alternate, deeply cordate with a nar- 

 row sinus, pointed, stipulate: stronger veins 6-12-jugal: petiole terete; spathe "yellowish- 

 green." — Plum. Descr. t. 55, 51, d. Jacq. Amer. Pict. t. 230. Desc. Fl. 3. t. 168. — 

 Arum, L. P. Jacquinii, Schott. — Leaves and spathe about 6" long. — Hab. Jamaica (P. Br., 

 Desc); [Cuba to Martinique ; Panama!, Venezuela, Guiana]. 



** Leaves pinnatifid, \-nerved. 



18. P. lacerum, Schott! Scandent; leaves alternate, large, pinnatifid to one-fourth 

 of the transverse diameter, deeply cordate : stronger veins 9-10-jugal, 4-3 lowest pairs re- 

 curved, naked at the sinus : auricles approximate : lobes ovate, blunt : petiole long ; pedun- 

 cles fascicled, long; spathe "yellow" (Jacq.) — Plum. Descr. t. 53, 51, b. Jacq. Schosnbr. 

 4. t. 468.— Arum, Jacq. Caladium. L— Leaves 1 0"-20" long, 8"-16" broad ; spathe 3"-4" 

 long. — Hab. Jamaica !, Dist., Wullschl.; [Cuba! to Venezuela]. 



*** Leaves Z-partite, %-nerved. 



19. P. tripartitum, Schott. Scandent; leaves Z-partite, subtruncate at the base: 

 segments entire, middle segment elliptical-oblong, pointleted, with 4-6-jugal stronger veins, 

 lateral oblique with the stronger veins unilateral ; petiole long, naked ; spathe " white above, 

 greenish with yellow spots at the base" (Jacq.) — Jacq. Schcenbr. 2. t. 190. — Arum, Jacq. 

 Caladium, W. — Leav-segments 8"-10" long, 3"-2i" broad, shorter than the petiole ; spathe 

 4" long. — Hab. Jamaica !, March ; [Venezuela]. 



7. SYNGONIUM, Schott. 

 Spadix of Philodendron -. spathe convolute-sheathing at the base, persistent. Anthers 



