SPIBANTHES 



Liixnodorum. 



LILIACEJE. 73 



OBCHIASTBUM in Bay. Reg. Bot., and Epipactis is 



IRIDACE^E. 



Herbs with 2-ranked leaves, the flower buds inclosed by bracts. Perianth adherent 

 to the ovary, segments in two, often unequal sets. Stamens 3. anthers extrorse. Ovary 

 3-celled, style 1, stigma 3, often petaloid. Key to genera and species, p. 177. 



SISYBINCHIUM. 



This genus is Bermudiana in Bay-Reg. Bot. 



S. sarmentosum, Suksdorf. Stem and leaves very slender: segments of the small 

 light blue perianth, all abruptly acuminate. Washington. 



Flower and buds of Calochortus albus, and the three- 

 winged fruit outlined. 



LILIACE^E. 



Herbs, or rarely woody plants, with regular and symmetrical flowers; the perianth 

 free from the chiefly 3-celled ovary, with the divisions all petaloid (except in Trillium 

 and Calochortus), the stamens opposite the divisions of the perianth, usually 6 (rarely 3 

 of them, nat pollenifrous), sometimes only 3, and in one genus the parts of the flower 

 in 2's. The antherless stamens in about a dozen of our species are not rudimentary, as 

 in Collinsia, but well developed, as in Pentstemon, and probably as in that genus, 

 assist insects in cross-fertilization. These stamens are called staminodia. Key to genera 

 and species, p. 178 



