SELAGINELLACE&. 14 1 



much branched; leaves loosely imbricate, scarcely i" long, 

 linear-lanceolate, convex and grooved on the back, acute, 

 sparsely spinulose-denticulate, not bristle-tipped ; spikes quad- 

 rangular, very slender ; macrosporangia scarce. Port Orford, 

 Oregon (Kautz)', Tilamook Valley, Oregon (Howell); probably 

 in Northern California. 



2. STACHYGYNANDRUM Baker. Stem leaves of two kinds, 

 spreading in two planes, those of the upper plane smaller and 

 more ascending ; bracts uniform. 

 * Main stems decumbent ; root fibres extending to upper nodes. 



t Stems persistent ; leaves rigid, firm in texture. 

 4. S. Douglasii (H. & G.) Spring. Stems 3' 12' long; 

 branches 2' 6' long, bi tripinnately divided ; leaves of lower 

 plane i" long, obliquely oval, obtuse, faintly nerved; leaves of 

 upper plane half as long, oval, incurved, ending in a short 

 point, both sparingly ciliate at base; spikes 6" 12" long, quad- 

 rangular, terminal ; bracts deltoid-cuspidate, strongly imbri- 

 cate. (Lycopodium Douglasii H. & G., L. ovalifolium H. & G.) 

 Northern California to British Columbia. 



ft Stems mostly annual, fugacious ; leaves mostly membranous, 

 flaccid. 



J2y7 5. S. apus (L.) Spring. Stems i' 4' long, slender, angled on 

 the face, prostrate, creeping, much-branched, flaccid ; leaves of 

 the lower plane spreading above, the lower reflexed, ovate, acute, 

 serrulate, not distinctly ciliate ; leaves of the upper plane ovate, 

 shortly cuspidate; spikes 3" 6" long; bracts ovate, acute, 

 membranous, strongly serrulate, acutely keeled in the upper 

 half. Canada and New England to Rocky Mountains, and 

 southward to Florida and Texas. 



r - 6. S. Ludoviciana A. Br. Stems slender, copiously pin- 

 nate, flat both sides, 4' 6' long, lower branches slightly com- 

 pound ; leaves of lower plane rather distant except at tips of 

 branches, spreading, ovate-oblong, sub-acute, firmer in texture 

 than in preceding, serrulate, not distinctly ciliate ; leaves of 

 upper plane half as long, obliquely oblong, cuspidate; spikes 

 3'' 6" long ; bracts ovate-lanceoiate, strongly keeled. (S. 

 apus, var. denticulata Spring, where it may belong, the differ- 

 ences possibly due to climatic conditions.) Covington, Louisi- 



