4 NORTH AMERICAN FLORA [VoLumE 16 
Plants usually rather large ; lamina 7-20 em. long, 10-30 
em. broad. 
Lamina-stalk usually 5 em. or more long; plant not 
excessively fleshy, often very slender. 
Segments mostly 545 mm. long, 2-20 mm. broad, 
few smaller. 
Spores maturing from July to September. 
Segments mostly oblong to ovate, the margins ar 
crenulate or only coarsely serrulate. 12. B, silaifolium. 
Segments narrower, cuneiform, oblong or 
lanceolate, the outer margins mostly sharply 2 
and finely serrulate. 13. B. decompostium. 
Spores maturing from May to June ; segments 
mostly elliptic to rhombic, expanded; plants 
lax. 14. B. californicum. 
Segments all small, 2-5 mm. long, 1-5 mm. broad. 15. B. Schaffnert. 
Lamina-stalk short, 1-4 cm. long ; plant very stout and 
16. B. Coulteri. 
fleshy. 
oa nae smaller; lamina 24.5 cm. long, 3-7 cm. 
road. 
Lamina-stalk not more than 2 em. long. 17. B. pusilium. 
Lamina-stalk 2-8 cm. long. 18. B. Matricariae. 
Segments mostly rounded above, cuneiform to lunulate 
(southeastern United States and Jamaica). 
Spores maturing from February to April. 
Bud with a few scattered hairs ; lamina sessile or nearly 
so, the segments mostly fan-shaped (southern 
states). 19, B. bifernatum., 
Bud densely hairy; lamina stalked, the segments 
mostly oval or ovate (Jamaica). 0. B. Jenmani, 
Spores maturing from July to October. 
Plants slender, lax; segments cuneiform to lunulate 
(southern states). 21. B, alabamense. 
Plants rather stout; segments spatulate to ovate 
(Jamaica). 22. B. Underwoodianum. 
1. Botrychium simplex Hitchce. Am. Jour. Sci. 6: 103. 1823. 
Botrychium Kannenbergii Klinsman, Bot. Zeit. 10; 278. 1852. 
Botrychium virginicum simplex A, Gray, Man. ed. 2. 602. 1856. 
Plant slender, 2-20 cm. high; rhizome slender, short; bud smooth, entirely enclosed ; 
leaf erect, the commonstalk usually about half hypogean, often less, 1-5 cm. long, the 
lamina erect or slightly bent in vernation, stalked (0.2-2.5 cm.), deltoid or deltoid-ovate, 
rounded, 0.3-4 cm. long, 0.2-2.2 cm. broad, entire, incised to pinnately or sometimes sub- 
ternately divided, the primary divisions oblong-ovate, entire to pinnately divided with 
broadly cuneiform to fan-shaped or lunulate, entire or radially incised, separated and often 
distant segments ; sporophyl long-stalked, often one-half to two-thirds the height of the 
plant, 0.6-16 cm. long, erect in vernation, the panicle lax. 
TYPE LOCALITY: Conway, Massachusetts. 
DISTRIBUTION : Nova Scotia to Pennsylvania, west to the Pacific coast; also in Europe. 
ILLUSTRATIONS: Am. Jour. Sci. 6: p/.8, Davenp. Notes Botrych. Simplex f/. 7; Nova Acta 
Acad. Leop.-Carol. 26: p/. #9; D.C. Eaton, Ferns N. Am. 1. 17, f. 1-8; Britt. & Brown, Ill. Fl. 
J: 2: 
2. Botrychium pumicola Coville; Underw. Our Nat. 
Ferns ed. 6. 69. 1900. 
Plant stout, fleshy, 8-17 cm. high; rhizome stout, erect, 2-7 cm. long, 1.5-3 mm. 
thick ; bud smooth, entirely enclosed; leaf erect, the commonstalk hypogean, 3.3-7 cm. 
long, thickly sheathed for about half its length by the remains of dead fronds, the lamina 
with the apex bent down in vernation, glaucous-green, sessile, clasping, deltoid, rounded 
above, 0.5-4 cm. long, 0.5-4 cm. broad, once ternately divided, the divisions oblong 
or oblong-ovate, pinnately parted into cuneiform to lunulate, entire or radially incised, 
closely imbricated segments; sporophyl 0.5-4.5 cm. long, erect in vernation, the panicle 
compact. 
TYPE LOCALITY: Llao Rock, Crater Lake, Oregon, altitude 3600 meters. 
DISTRIBUTION: Known only from the type locality. 
ILLUSTRATION: Bull. Torrey Club 28: i. 7. 
