25 



26 



short point, both sparingly ciliate at 

 base; spikes 6-12" long, quadrangular, 

 terminal; bracts deltoid-cuspidate, 

 strongly imbricate. Oal; BC. Synonyms: 

 Lycopodium Douglasii H & G.—-L. ovali- 

 folium H & G. 



II. — -Sts mostly ann, fugacious; lvs 

 mostly membranous, flaccid. 

 S: Spring. 



Sts 1-4' long, slender, angled on face, 

 prostrate, creeping", much branched flac- 

 cid; lvs of lower plane spreading above, 

 lower reflexed, ovate, acute, serrulate, 

 not distinctly ciliate; lvs of upper plane 

 ovate, shortly cuspidate; spikes 3-6" lg; 

 bracts ovate, acute, membranous, strong- 

 ly serrulate, acutely keeled in upper half. 

 Canada; Rocky Mts; Fla; Texas. 

 S: laUDO i IJIAbi A A. Br. 



Sts slender, copiously pinnate, flat on 

 both sides, 4-6' long, lower branches 

 slightly compound; lvs of lower plane 

 ratner distant except at tips of branches, 

 spreading, ovate-oblong, subacute, iiriner 

 in texture than in S. apus, serrulate, . nut 

 distinctly ciliate; lvs uf upper plane V2 

 as long, obliquely oblong, cuspidate; 

 spikes 3-6" long; bracts ovate-lanceolate, 

 strongly keelea. La; PI a. Synonym: S. 

 apus denticulata Spring. 

 **Sts densely tufted, roiling into a nest- 

 like ball when dry; sts confined to base 

 of sts. 



S. LEIIDOFHYLLA Spring. Baja. Ar. 

 B 2:350. 



Sts 2-4' long, densely tufted, pinnately 

 branched to base, pinnae ascending, sub- 

 flabellately compound; lvs of lower plane 

 closely imbricate, ascending, obliquely 

 ovate, obtuse, thick, rigid, minutely ci- 

 liate, g above, paler below, becoming 

 r'ish-brown in age; lvs of upper plane 



north tern- 



fertile at apex. 



Futile fronds or fertile Portions vW 

 much contracted, bearing short-pedicel- 

 led, naked sporangia on the margin of 

 the rachis-like divisions Sporangia largu 

 globular, opening by a longitudinal ciett 

 into halves, bearing near apex a rew 

 parallel striae, the rudiment of a tr ans 

 verse ring. Spores g. Named for 0&- 

 munder, a Saxon name lor the divinit* 

 Thor. Six species, mostly 

 perate. 



'•'Fronds bipinnate, 



O: KEGA. lis L. ^ ^ r\ 



Canada to Fla; Miss. Synonyms, O. 

 spectabilis Willd.— O. glaucescens Link. 

 * Sterile fronds bipinnatind. 



stipes tvifted, 1° or more long, clothed 

 with loose woolly tomentum when young, 

 naked when mature; fronds 1-2 long, 8- 

 12' h^ad; pinnae oblong-lanceolate with 

 oblong, obtuse divisions; 2-5 pairs 01 

 co-tral pinnae fertile, fertile pinnules 

 ( cylindrical: texture herbaceous. 



Hanada: Ky: northward. Synonym: O. 

 interrupta Michx. 



Cinnamon-fern. Stipes densely tufted, 

 r or more long sterile and fertili .fronds 

 distinct, clothed when young With terru 

 g nous omentum; sterile fronds smooth 

 when mature, the pinnae bearing a tuft 

 ot Momentum at base beneath, lanceolate, 

 cut into broadly oblong, obtuse divisions 

 fertile fronds contracted, bipinnate, with 

 cinnamon-colored sporangia. New Eng^ 

 land; Wis; Fla. Synonym: O. clay- 

 toniana Conrad. 

 Variety FBOKDOSA Gray. 



Fronds in part sterile below, sparsely 



ncurly n< long'. ,.bli M ur|y ,,',,i«s,; Sub-order 1 HYMENOPSY^I-ACEAE EndL 



spikes 3-6" long, quadrangular; bracts 

 deltoid, acutely keeled. Tex; Arizona; 

 Cal? 



B: PIX.IFERA A. Braun. 



Primary branching varies from fla- 

 bellate to pinnate, lvs cuspidate and ser- 

 rulate. Mexico; Texas? 



Descriptions of the following have not 

 been seen by the writer. 



S: ARE KI OOXi A Underwood. 



S: BSYCIjOES (Nuttall) Underwood. 



Synonym: S. cinerascens A. A. Eaton. 

 S: MUTICA D. C. Eaton. 

 S: PEI25GLEI Baker. 

 S: RUPIN COIi A Underwood. 

 S: SI BUPHIOZ. GIBES (Presl) Under- 

 wood. 



S: TORTiriLA A. Br. 



Order riLlCES Juss. 



A large order of 70 to more than 200 

 genera (according to different botanists), 

 and 3000 or more species. It contains six 

 well-marked sub-orders (considered as 

 orders by some recent authors). 



Sub-order OSMUND ACE Ail R. Br. 



Sporangia naked, globose, mostly , pe- 

 dicelled, with no ring or mere traces of 

 one around apex, opening into halves by 

 a longitudinal slit. 



Sporangia borne on fey a 



. r often 

 filiform, receptacle, surrounded t 

 complete transverse ring, _ opening i verti- 

 cally Sori terminal or marginal from 

 the apex of a vein. Indusium inferior, 

 com of same texture as frond Fronds 

 delicately membranous and pellucid. 

 TElGHO'aiANES Sm. » 



Indusia tubular, cup-shaped or fun- 

 nel-shaped, sometimes 2-lipped. Filmy 

 fern. Near 100 species, of the tropics. 

 Section EUTEICHOMAKES 

 T: PETES. .311 Gray. , 1rt „ , _ 



Stipes 1-2" long; fronds 3-10 long, 

 1-2" b?oad oblong-lanceolate or obo- 

 vaU entire or variously pmnatifid the 

 younger ones with a few. black hairs 

 along the margins; indusium solitary, 

 tSnal funnel-shaped, the mouth ex- 

 panded and slightly 2-lipped the re- 

 ceptacle included. Winston Co, Colo 

 (Peters). 



StaSSk wiry 8 tomentose; stripes as- 

 ?pnd?nS 1-3' long, naked or nearly so, 

 com bfoaclly winged; fronds 2-8/ long, 

 wide, lanceolate or ovate lan- 

 ceolate, bipinnatind; pinnae ovate, ob- 

 tuse upper side of base parallel and 

 Oppressed to the winged raehis, lower 

 sPde cuneate; divisions toothed or divid- 

 ed Into linear lobes; indusia terminal on 

 short lobes, tubular or funnel-shaped 

 the mouth 'slightly 2-lipped; receptacle 



