^^^' 235 



parted. The anthers of 9 stamens 4-cellecl. Trees. Leaves 

 oblong, entire, alternate. Flowers small, panicled. Berries 

 dark blue on a red pedicel. Persea Caroliniensis, Nees. 



705, The 3 stigmas petaloid, covering the stamens. 

 Style none, or scarcely any. Perianth funnel-form, adherent 

 to the ovary ; segments in 2 sets (colored alike), somewhat 

 nnequal ; the 3 outer ones reflexed, the 3 inner erect. 

 Flowers large, showy. Herbs from horizontal rhizomes. 

 Leaves sword-shaped, equitant, 2-ranked. Iris. 



Stigma, or stigmas never petaloid. Perianth-seg- 

 ments greenish, or of another color 706 



706, Ovary superior 710 



Ovary inferior 707 



707, Submersed, dioeciously-polygamous aquatics. Stems 

 elongated, branching, crowded with lanceolate, oblong or 

 linear, serrulate, verticillate leaves. Perianth of the fertile 

 flowers slender, hair-like, 6-parted. Flowers dingy white, 

 solitary and sessile, from a sessile and tubular axillary spathe. 



Anacharis Canadensis, Planchon (885). 

 Herbs not submersed 708 



708, Leafless herbs, beset with minute scales. Stems 

 capillary, 2 to 3 inches high. Tube of the bell-shaped peri- 

 anth strongly 3-winged. Flowers 1 or 2, sometimes more, 

 small, light blue, at the top of the stem. Capsule prismatic. 



Burmannia biflora, L. 

 Plants with parallel-veined, grass-like leaves. . .709 



709, Anthers linear, fixed by the middle ; filaments dis- 

 tinct. Perianth smooth and yellow within, scurfy or woolly 

 outside ; the 3 exterior sepals linear, the 3 inner lance-oblong. 

 Leaves sword-shaped, equitant, mostly radical. Marsh herbs. 



Lachnanthes tinctoria, Ell. 

 Anthers extrorse ; filaments monadelphous. Peri- 

 anth blue, or purple, glabrous, with the segments mucronate. 

 Flowers on filiform pedicels, small. Scape simple, strongly 

 winged, so as to resemble a leaf. Leaves linear, as long as 

 the scape. Spathe 2-leaved. 



Sisyrinchium Bermudianiun, L. 



710, Perianth petaloid; tube slender. Low, or grass- 



