AROIDE;E. 509 



macrophylla, W.— Stemless ; leaves 10"-20" long, 8"-14" broad; spadix slender, 12"-6" 

 loug. — Hab. Jamaica!, March, Wullschl., on trees; S. Kitts. 



§3. Leaves approximate, palmalipartite ; stem short. 



9. A. palraatum, Kth., Schott ! Leaves chartaceous, long-petioled, palmatipartite : 

 segments 7 —10, spaihulate-lanceolate ; peduncles long ; spadix slender, little exceeding the 

 linear-acuminate spathe, naked at the base. — Plum. Descr. t. 64. 65. — Pothos, L. — Leaves 

 " several feet in diameter ;" spadix 8"-14" loug. — Hab. Dominica!, Imr. ; [Martinique], 



A. Andersonii, Schott (leaflets 9), and A. pentaphyllum, Kth., are said to occur in S. 

 Lucia : both are distinguished from A. palmatitm by the leaflets quite distinct. 



2. SPATHIPHYLLUM, Schott. 



Spadix naked at the base, supported by a foliaceous, persistent spathe. Stamens 6. Ovary 

 "3(-4)-celled : cells few-ovulate." Seeds albuminous. — Stemless herbs; leaves elliptical, 

 pointed, uninerved : veins numerous, parallel: petiolar sheath embracing the peduncle; 

 spathe at length greenish. 



10. S. cannifolium, Schott! Spathe ovate-oblong, shortly cuspidate, little exceeding 

 the spadix ; naked part of the spadix short, free from the spathe; calyx truncate, about 

 as long as the ovary. — Schott, Aroid. t. 1. — Pothos, Dryand. — Leaves l"-li" long, 5"-8" 

 broad ; spathe 6" long, 2" broad ; spadix 5"-3", naked part of it about 4"' long. — Hab. 

 Trinidad!, Schott, Cr., Lockh., common in moist places ; [Brazil]. 



3. MONSTERA, Ad. 



Spadix free from the cymbiform, decaying spathe, bearing flowers to the base. Stamens 

 naked, 4(-6). Ovary 2-celled: cells 2-1-ovulate. Seeds exalbuminous. — Stem woody, ra- 

 ti icant on trees; leaves approximate, 1-nerved: stronger veins curved, parallel ; spathe co- 

 loured. 



From a monstrosity (collected by Mr. Wullschlaegel), in which the stamens are trans- 

 formed into a calyx, it appears that Dracontium is nearly allied, being chiefly distinguished 

 by the spathe persistent, and the spadix naked at the base. 



11. M. pertusa, Gr. Leaves membranaceous, ovate, at length perforated along the 

 midrib by oblong or oval-oblong holes ; spathe " yellow within," twice as long or half as 

 long again as the cylindrical spadix. — Plum. Descr. t. 56, 57. Desc. Fl. 3. t. 229. — Dra- 

 contium, L. M. Adansonii, Schott. M. Imrayana, Schott!: a form with a broader spathe 

 and the petiole sheathing to its summit. — Larger leaves about 1' long : yellow spadix 3"-5" 

 long. — Hab. Antigua!, Wullschl., Dominica !, Imr. ; [French islands! to Guiana!]. 



Tribe II. AJtACFAS. Flowers unisexual, naked: the spadix usually ' ? at the base, $ 

 above it. — Connective in the West Indian genera large, truncate, except in the anomalous 

 floating ones. 



4. DIEFFENBACHIA, Schott. 



Spadix free at the $ summit : ? part adnate to the persistent spathe, with its upper, abor- 

 tive flowers scattered. Anther-cells aduate to a column. Ovaries " 3-2 (-1) -celled," sur- 

 rounded by sterile filaments: cells 1 -ovulate. Seeds exalbuminous. — Stem erect; leaves 

 approximate at its summit, 1- nerved: veins numerous, parallel. 



12. I>. Seguine, Schott. Leaves ovate-oblong, pointed, rounded at the base : stronger 

 veins 9-15-jugal; spathe greenish. — Plum. Descr. 1. 61, 51, h. Jacq. Amer. Pict.t. 229. 

 — Arum, L. D. Plumieri, Schott. D. neglecta, Schott I -. Jacquin's form with the petiole 

 sheathing to its summit. — 3'-6'high; leaves about l'long. — Hab. Jamaica!, LHst.; [French 

 islands !, in moist places ; Guiana !]. 



5. MONTRICHARDIA, Crueg. 



Spadix free, covered wholly by flowers, <? above, ? below, devoid of sterile organs ; spathe 



2 i, 2 



