IRIS FAMILY 



469 



3. Hydastylus borealis Bick. 

 Northern Golden-e}ed Grass. Fig. 1147. 



Hydastylus borealis Bick. Bull. Torrey Club 27: 37S. 1900. 



Stems 6-30 cm. high, wing-margined. Leaves 

 about half the length of the stem, 1-3 mm. wide, 

 often with an abrupt linear tip; outer bract 15-20 

 mm. long, slightly surpassing the inner; pedicels 

 erect, slightly exserted, 15-20 mm. long; perianth- 

 segments yellow, 8-10 mm. long, mostly 5-nerved ; 

 anthers 2-2.5 mm. long ; capsule ellipsoid, 6-8 mm. 

 long ; seeds .75-1 mm. in diameter, finely pitted. 



Moist situations, Humid Transition Zone; Vancouver 

 Island and Whatcom County, Washington. Type locality: 

 Whatcom County, Washington. More extended field work 

 and garden culture may prove this species and Hydastylus 

 brachyf'ns to be mere forms of Hydastylus califoniica. 



4. Hydastylus elmeri (Greene) Bick. 

 Drew's Golden-eved Grass. 



Fig-. 1148. 



Sisyiinchiuin elmeri Greene, Pittonia 2: 106. 1890. 

 Hydastylus elmeri Bick. Bull. Torrey Club 27: 380. 1900. 

 Hydastylus riz'ularis Bick. Bull. Torrey Club 27: 380. 1900. 



Stems 10-30 cm. high, very slender, 1-2 mm. wide, 

 narrowly winged. Leaves half the length of the 

 stem, 1-3.5 mm. wide ; outer bract 12-25 mm. long, 

 united clasping for 5-6 mm., narrowed to an obtuse 

 apex, scarcely exceding the inner; pedicels usually 

 well exserted and spreading; perianth-segments 8-12 

 mm. long, orange-yellow with 5 dark purple veins, 

 obtusely pointed; anthers 3-5 mm. long; capsule ob- 

 long, 7 mm. long. 



Borders of mountain streams and meadows, Arid Transi- 

 tion and Canadian Zones; Sierra Nevada from Plumas County 

 to the San Bernardino Mountains, California. Type locality: 

 Lake Eleanor, Sierra Nevada, California. 



Family 2?,. ORCHIDACEAE. 



Orchid Family. 



Perennial herbs with cornis, bulbs or tuberous roots, sheathing entire leaves, 

 sometimes reduced to scales, the flowers perfect, irregular, bracted, solitary, spiked 

 or racemed. Perianth superior, of 6 segments, the 3 outer (sepals) similar or 

 nearly so, 2 or the inner ones (petals) lateral, alike; the third inner one (lip) 

 dissimilar, often markedly so, usually larger, often spurred, sometimes inferior 

 by torsion of the ovary or pedicel. Stamens variously united with the style into 

 pear-shaped, usually stalked masses (pollinia), united by elastic threads, the masses 

 waxy or powdery, attached at the base to a viscid disk (gland). Style often ter- 

 minating in a beak (rostellum) at the base of the anther or between its sacs. 

 Stigma a viscid surface, facing the lip beneath the rostellum, or in a cavity between 

 ihe anther-sacs (clinandrium). Ovary inferior, usually long and twisted, 3-angled, 

 1-celled ; ovules numerous, anatropous. on 3 parietal placentae. Capsule 3-valve(l. 

 Seeds very numerous, minute, mostly spindle-shaped, the loose coat hyaline, reticu- 

 lated ; endosperm none ; embryo fleshy. 



About 430 genera and over 5000 species, of wide distribution, most abundant in the tropics, many of those 

 of warm regions epiphytes. 



