PIPER FLORA OF THE STATE OF WASHINGTON. 83 



OPHIOGLOSSACEAE. 



Sterile portion of leaf simple, entire; veins netted Ophioglossum. 



Sterile portion of leaf pinnately divided or compound ; veins free Botrychium. 



OPHIOGLOSSUM. 



1. Ophioglossum vulgatum L. Sp. PI. 2: 1062. 1753. Adder's tongue. 



Type locality: "Habitat in Europae pratis sylvaticis." 



Range: Washington to Arizona, Texas, and Maine. Europe. Asia. 



Specimens examined: Skamania County, Suksdorf, June 26, 1895; Falcon Valley, 

 Suksdorf 1218. 



Zonal distribution; Humid Transition. 



BOTRYCHIUM. Grape fern. 



Bud in a cavity at one side of the base of the stem ; leaves thin, temate, 



then pinnately much divided 1. B. virginianum. 



Bud inclosed in the base of the stalk. 



Sterile portion of leaf arising near the base of the rather large plant . 2. B sUaifolium, 

 Sterile portion of leaf arising near the middle of the usually small 

 plant. 

 Green part of leaf oblong, its segments fan-shaped. 



Segments truncate at base, overlapping 3. 5. lunaria. 



Segments cuneate at base, distant 4. B. onondagense. 



Green part of leaf triangular or ovate, the segments not fan- 

 shaped. 



Segments lanceolate, acute; midvein continuous 5. B. lanceolatum. 



Segments oblong-ovate, obtuse; midvein dissipated 6. B. negledum. 



1. Botrychium virginianum (L.) Sw. Schrad. Journ. Bot. 1800^: 111. 1801. 

 Osmunda virginiana L. Sp. PI. 2: 1064. 1753. 



Type locality: "Habitat in America." 



Range: British Columbia to Labrador, south to Washington, Arizona, Texas, and 

 Florida. 



Specimens examined: Seattle, Piper 906. 

 Zonal distribution: Transition. 



2. Botrychium silaifohum Presl, Rel. Haenk. 1: 76. 1825. 

 Botrychium occidentale Underw. Bull. Torr. Club 25: 538. 1898. 

 Type locality: "Hab. in Nootka-Sound. " 



Range: British Columbia and Washington. 



Specimens examined: Lake Cushman, Henderson 1852; Seattle, Tarleton, July, 1894; 

 Piper, October, 1892; Lake Wenache, Sandberg & Leiherg 639; Usk, Kreager 360; Lake 

 Chelan, Elmer, September, 1897. • 



Zonal distribution: Humid Transition. 



This species appears in Suksdorf 's List as Botrychium ternatum Swartz. 



3. Botrychium lunaria (L.) Sw. Schrad. Journ. Bot. ISOO^: 110. 1801. 

 Osmunda lunaria L. Sp. PI. 2: 1064. 1753. 



Type locality : European. 



Range: Washington to Colorado and Labrador and northward. Europe. Asia. 



Specimens examined: Mount Rainier, Smi/^, October, 1888; Mount Ad&ms, Suksdorf , 

 July 11, 1886. 



Zonal distribution: Arctic. 



The Mount Adams specimen is the basis for the inclusion of Botrychium simplex Hitch- 

 cock in Suksdorf 's List. ' 



