440 ARACER. (ARUM FAMILY.) 
gated and naked above. Calyx and corolla none. Stamens 4 in a whorl, very 
short: anther-cells 2 — 4, distinct, opening-at the top. Ovary 1-celled, with 5-6 
erect orthotropous ovules. Stigma sessile. Fruit a 1 — few-seeded scarlet berry. 
Embryo in the axis of mealy albumen. — Root tuberous. Petioles of the com- 
monly divided and veiny leaves elongated and sheathing the scape. Fruit-clus- 
ters naked. 
1. A. triphyllum, Torr. (Waxr-RonrN.) Leaves two, trifoliate; leaf- 
lets sessile, oblong-ovate, acuminate; spathe tubular, dilated, flattened and 
incurved above, acuminate, green, or variegated with white and purple, longer 
than the club-shaped obtuse often diecious spadix. (Arum triphyllum, Z.)— 
Low rich woods, Florida, and northward. March. — Plant 19-1j? high. Leaf- 
lets 3'— 6! long. Root depressed, rugose, intensely acrid. 2 
2. A. polymorphum. Leaf solitary, 3 - 5-foliolate; leaflets varying 
from oblong to obovate, acute or slightly acuminate, nearly sessile, the lateral 
ones entire, 2-lobed or 2-parted to the base; spathe, &c. as in the preceding. 
(Arum polymorphum, Buckley. A. quinatum, Nutt. ?) — Mountains of North 
Carolina. — Plant 1° - 13? high. . ; 
3. A. Dracontium, Schott. (Dracon-roor.) Leaf solitary, pedately 
9 — 13-foliolate; leaflets petioled, entire, lanceolate or oblong, acuminate ; spathe 
tubular (green), concave and erect above, much shorter than the very slender 
spadix. (Arum Dracontium, L.) — Rich woods, Florida, and northward. 
March and April. — Plant 1°- 14° high. Berries numerous on the flat rhachis, 
1 - 3-seeded. 
2. PELTANDRA, Raf. Arrow-Arum. 
Spathe elongated, fleshy, convolute throughout, wavy on the margins, curved 
at the apex, persistent at the base. Spadix long, wholly covered by the mo- 
næcious flowers. Calyx and corolla none. Anther-cells 5-6, imbedded in the. 
thick peltate connective, opening by a terminal pore. Ovary 1-celled, with sev- 
eral orthotropous ovules. Berry 1-3-seeded. Seed gelatinous, without albu- 
men. Embryo large. Plumule conspicuous, curved. — A fleshy stemless marsh 
herb, from a creeping rhizoma. Leaves sagittate, with the petiole sheathing the 
base of the thick scape. Fruit-clusters enclosed in the fleshy persistent base of 
the spathe. 
1. P. Virginica, Raf. Leaves several, oblong, acute, finely veined, and 
with 2 ~3 intramarginal nerves, the lobes obtuse ; scapes shorter than the isis 
recurved in fruit; spathe lanceolate, acute, longer than the cylindrical spadix, 
both early decaying above the fertile flowers ; berries green, in a globose cluster, 
l-seeded. (Arum Virginicum, L.) — Marshes and wet places, Florida, and 
northward. April and May.— Plant 1° high. Spathes 2/- 4’ long. 
.* 
 XANTHOSOMA, Schott. | 
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