362 ARACEAE. 
2. PELTANDRA Raf. Journ. Phys. 89: 103. 1819. 
Bog herbs, with entire sagittate acute or acuminate leaves, the long petioles sheathing 
the shorter scape at the base. Spathe elongated, convolute, or expanded above. Flowers 
monoecious, covering the whole spadix. Perianth none. Staminate flowers uppermost, 
consisting at first of irregularly 4-sided oblong flat-topped shields, from the edges of which 
appear 6-10 imbedded anthers opening by apical pores, the shields ultimately shrivelling 
and leaving the linear-oblong anthers nearly free. Ovaries ovoid, surrounded at base by 4 
or 5 white fleshy scale-like staminodia, 1-celled; ovules solitary or few, amphitropous; style 
erect, short, thick, tipped with asmall stigma. Fruit a green or red berry, 1-3-seeded, when 
ripe forming large globose heads at the extremity of the finally recurved scape, and enclosed 
in the persistent leathery base of the spathe. Seeds surrounded by a tenacious jelly; endo- 
sperm none. [Greek, referring to the shield-shaped staminate disks. ] 
The genus consists of the two following species: 
Spathe narrow, convolute its whole length, green. 1. P. Virginica. 
Spathe with a whitish dilated summit. 2. P. sagittaefolia. 
1. Peltandra Virginica (L.) Kunth. Green Arrow-arum. (Fig. 878.) 
Arum Virginicum I,. Sp. Pl. 966. —1753- 
Peltandra undulata Raf. Journ. Phys. 89: 103. 1819. 
Peltandra Virginica Kunth, Enum. 3:43. 1841. 
Leaves bright green, somewhat hastate-sagit- 
tate, 4’-30’ long, 3/-8’ wide, acute or acuminate 
at the apex, firm, strongly veined. Root a tuft 
of thick fibres; scape nearly as long as the leaves, 
recurving and immersing the fruiting spadix at 
maturity; spathe green, 4/-8’ long, long-conic, 
closely investing the spadix throughout, the 
strongly involute margins undulate; spadix 
shorter than the spathe, the pistillate flowers 
covering about one-fourth of its length, the rest 
occupied by staminate flowers; ovaries globose- 
ovoid; style nearly '%4’’ long; stigma a little 
thicker than the style; berries green when ripe. 
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In swamps, or shallow water, Maine and On- 
tario to Michigan, south to Florida and Louisiana. 
May-June. 
2. Peltandra sagittaefolia (Michx.) Morong. White Arrow-arum. 
(Fig. 879.) 
Calla sagittaefolia Michx. Fl. Bor. Am. 2: 187. 
1803. 
Peliandra alba Raf. New Fl. N. A. 1: 88. 1836. 
Nanthosoma sagiilaefolia Chapm. Fl. S. States, 
441. 1860. Not Schott. 
Peltandra sagitiaefolia Morong, Mem. Torr. Club, 
5: 102. 1894. 
Leaves sagittate, sometimes wider than those 
of the preceding species, acuminate or acute, 
the basal lobes diverging, obtuse or subacute; 
petioles 8’-20’ long, equalling or longer than 
the scape; spathe 3’-4’ long, with a whitish ex- 
panded acuminate apex; spadix scarcely more 
than one-half as long as the spathe, the stami- 
nate flowers borne on its upper half; ovaries 
ovoid; style scarcely any; stigma broad, 
depressed, lobed; ripe berries red. 
In marshes and springs, southern Virginia (ac- 
cording to Gray) to Florida. May-July. 
