94 LILIACEAE. 



Flowers racemed or panic- 

 ^led. 



Flowers polygamous 

 or monoecious, 



rather large. 126. VERATRUM, 103. 



Flowers perfect, small. 

 Perianth-segments 



6. 127. VAGNERA, 103. 



Perianth-segments 

 4. 128. UNIFOLIUM, 104. 



107. HOOKERA. 



Usually erect scapose herbs from a membranous-coated corm; 

 leaves linear; inflorescence a several-bracted umbel of few to 

 many flowers on jointed pedicels; perianth funnel-form not 

 contracted at the throat, blue, purple, yellow or white, the seg- 

 ments united; stamens 3, on the throat opposite the inner lobes 

 and alternate to the sterile stamens, or 6 in one or two rows; 

 ovary stalked or sessile, 3-celled, each cavity containing 3-8 

 seeds. 



Anther-bearing stamens 3. 



Flowers in umbels, long-pedicelled. H. coronaria. 



Flowers nearly sessile, in a very short raceme. H. pulchella. 



Anther-bearing stamens 6. 



Stamens in one row; flowers whitish. H. hyacinthina. 



Stamens in two rows; flowers blue or purplish. 



Filaments of inner stamens narrow. H. douglasii. 



Filaments of inner stamens^broad. H. howellii. 



Hookera coronaria Salisb. Scapes 10-20 cm. high, about as long as the 

 narrow leaves; umbel with elongate spreading unequal rays; flowers deep blue, 

 24 cm. long; sterile stamens flat, erect, white, entire. 



In gravelly prairies, Vancouver Island to California. 



Hookera pulchella Salisb. Scapes 60-100 cm. high, much exceeding the 

 keeled glaucous leaves; flowers purple-blue, in a dense often elongated cluster; 

 sterile stamens deeply cleft. 



In dry prairies, Washington to California. 



Hookera hyacinthina (Lindl.) Kuntze. Scapes 30-70 cm. tall; leaves 

 linear-lanceolate, shorter than the stem, 58 mm. broad; flowers numerous; 

 perianth open-campanulate, white, each lobe with a green midvein, the tube 

 about half as long as the lobes; stamens in one row, the filaments broadly 

 dilated, equal; capsule subglobose. 



In low meadows, Vancouver Island to California. 



Hookera douglasii (Wats.) Piper. Wild Hyacinth. Scape tall; corm 

 globose, the outer coats coarsely fibrous; leaves 2 or 3, shorter than the 

 stem, 24 mm. broad; flowers blue, usually numerous, in a dense umbel; 

 pedicels 2-30 mm. long; perianth tubular-campanulate, 2-3 cm. long, the 

 tube longer than the lobes; stamens in two rows, the upper and longer ones 

 on the petals; filaments naked; capsule oblong-ovoid, short-stipitate. 



In the vicinity of Victoria, Vancouver Island, Macoim. Common east of 

 the Cascade Mountains to Wyoming and Utah. 



