3 62 



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, I -celled; ovules solitary or few, amphitropous; style 

 erect, short, thick, tipped with a small 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 1 species: 



Spathe narrow, convolute its whole length, green. i. P. Virginica. 



Spathe with a whitish dilated summit. 2. P. sagittaefolia. 





i. Peltandra Virginica (I,.) Kunth. Green Arrow-arum. (Fig. 878.) 



Arum Virginicum L,. Sp. PI. 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 / ~3o / 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 / -S / 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 y z ' f long; stigma a little 

 thicker than the style; berries green when ripe. 



In swamps, or shallow water. Maine and On- 

 tario to Michigan, south to Florida and Louisiana. 

 May-June. 



2. Peltandra sagittaefolia (Michx.) Morong. 



(Fig. 879.) 



Calla sagittaefolia Michx. Fl. Bor. Am. 2: 187. 

 1803. 



Pellandra alba Raf. New Fl. N. A. i: 88. 1836. 



Xanthosoma sagittaefolia Chapm. Fl. S. States, 

 441. 1860. Not Schott. 



Peltandra sagittaefolia 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. 



White Arrow-arum. 



