48 



SELAGIXELLACEAE 



5. Selaginella oregana D. C. Eaton. Festoon or Oregon Selaffinella. 



Fig. 



'S^" .j\_ia.giii\_iici. -L Jg. lUo. 

 Selaginella oregana D. C. Eaton in S. Wats. Bot. Calif. 2: 350. 1880. 

 Selaginella struthioloides Underw. Bull. Torrey Club 25: 132. 1898, 

 not Lycopodium struthioloides Presl, 1825. 



Plants lax, usually pendent, 15-60 (90) cm. long; branches 

 numerous, slender, recurved, looseh intricate. Leaves 

 ascending, loosely imbricate, bright green, lustrous, long- 

 decurrent, narrowly lance-attenuate, 2.35-3.35 mm. long 

 (seta included), 0.47-0.62 mm. broad at the spongiose upper 

 base, herbaceous, with a broad, shallow, dorsal groove; 

 seta 0.15-0.35 mm. long, yellowish green, attenuate, nearly 

 smooth ; cilia 5-7 (9) on each side. 0.2-0.6 mm. long, oblique, 

 mostly incurved. Spikes numerous, curved. 1.5-3 cm. long, 

 not sharply differentiated; sporophylls bright green, her- 

 baceous, ovate, long-acuminate, 1.8-2.4 mm. long (seta in- 

 cluded), 0.8-1 mm. Ijroad, broadly sulcate ; seta 0.08-0.25 

 mm. long, continuous, yellowish-hyaline or discolored, 

 pungent; cilia i-7 on each side, 0.015-0.045 mm. long, stout, 

 ascending, often curved; megaspores lenticular, light yellow, 

 0.345-0.4 mm. broad, coarsely alveolate-reticulate; micro- 

 spores orange, about 0.034 mm. thick. 



Trunks and branches of mossy forest trees, Humid Transition 

 Zone; western Washington (Chehalis and Thurston Counties), south- 

 ward in the coastal region to Humboldt County, California. Type lo- 

 cality: Port Orford, Oregon. 



6. Selaginella hanseni Hieron. Hansen's Selaginella. Fig. 104. 



Selaginella hanseni Hieron. Hedwigia 39: 301. 1900. 



Stems prostrate, 5-25 cm. long, rooting throughout, 

 pinnately branched ; branches usually close, unequal, the 

 basal ones up to 7 cm. long, 2-3-pinnate, subflabellate, 

 strongly dorso-ventral. Leaves obliquely imbricate ( the 

 lower ones of the larger branches often widely so), 

 glaucous, dark ashy or purplish with age, broadly subulate, 

 acute, 2.7-3.5 mm. long (seta included). 0.4-0.5 mm. 

 broad; seta 0.7-1 mm. long, whitish-hyaline, serrulate; 

 cilia 8-16 on each side, mostly 0.06-0.09 mm. long, mostly 

 very oblique, the upper ones appressed. Spikes 5-9 mm. 

 long, numerous ; sporophylls deltoid-ovate, acuminate, 

 2-2.8 mm. long (seta included), the blade, 0.9-1.5 mm. 

 broad ; seta 0.4-0.7 mm. long, stiff, whitish-hyaline, 

 nearly smooth ; cilia 25-30 on each side, rigid, very 

 oblique, the lower ones 0.0-1-0.07 mm. long, the upper 

 ones dentiform ; megaspores about 0.39 tnm. thick, 

 orange yellow, slightly rugulose ; microspores about 0.039 

 mm. thick, orange. 



Rocky slopes. Transition Zone; mountains of California, from the 

 region of Mount Shasta to Fresno County, mainly in the lower 

 Sierra Nevada. Type locality: .Vmador or Calaveras County, 

 California. 



Selaginella scopulorum ]\Iaxon. Rocky Mountain Selaginella. Fig. 105, 



Selaginella scopulorum Maxon, Am. Fern Journ. 11: 36. 1921. 

 Stems prostrate, short-creeping, d)-6 cm. long, pin- 

 nately branched, subcespitose, forming large mats ; 

 branches numerous, close, the sterile ones mostly 

 0.5-1.5 cm. long, ascending, simple or with several very 

 short, oblique di\-isions. Leaves appressed-imliricate 

 (those on the under side largest), chartaceous, sub- 

 glaucous, linear to lance-subulate, narrowed to :.n ob- 

 tuse apex, 2.35-3.25 mm. long (seta included), 0.3-0.6 

 mm. broad ; seta 0.3-0.6 mm. long, stiff, scabrous, 

 whitish-hyaline from a long lutescent base ; cilia 4-8 

 (11) on each side. 0.06-0.12 mm. long, mostly oblique 

 and incurved. Spikes numerous, 1-2.5 cm. long, slender. 

 suberect ; sporophylls coriaceous, deeply concave, broadly 

 ovate, long-acuminate, mostly 2.2-2.8 mm. long (seta 

 included), 1-1.3 mm. broad; seta 0.3-0.55 mm. long, 

 subentire, pungent, whitish-hyaline from a long, lutes- 

 cent base ; cilia usually 8-15 on each side, stout, 0.04- 

 0.06 mm. long, the upper ones dentiform ; megaspores 

 subglobose, yellow, about 0.4 mm. tiiick, foveolate- 

 reticulate ; microspores orange, about 0.047 mm. thick. 

 Open rock-slopes, Canadian to Arctic-Alpine Zone; British 

 Columbia to eastern Oregon (Blue Mountains) and Colorado. 

 Type locality: Cracker Lake, Glacier National Park, Montana. 



