1013 1014 



N: ASCEENBOKNIAJTA Klotzsch twice pinnate, upper surface sparingly, 



Rtstock short, creeping; stipes tufted, under thickly covered with w powder; 



2-S' long-, wiry, ebeneous, densely scaly; rachises brown like the stipes, coated 



fronds 4-10' long-, 2-3' broad, oblong-Ian- with a granular substance extending 



ceolate, tripinnatifld; pinnae lanceolate, down the stipes, and clothed with long, 



cut into linear-oblong, crenate or pin- slender, entire or ciliate, pale or w'ish 



natifid pinnules; upper surface pale g, scales; pinnae short-stalked, oblique, 



the lower densely matted with linear, unequally triangular-ovate, ovate-lan- 



ciliate, bright ferruginous scales, be- ceolate, or lanceolate, deeply pinnatifid 



neath which it is subfarinose; sori black, or pinnately divided into 1 or 2 pairs 



Huachuca mts, Ar (Lemmon) ; Texas of short-stalked or sessile, oblong, pin- 



vDrummond); Mex. natifid obtuse pinnules, the remaining 



Section CXNCZltAXiIS Desv. Fronds fa- portion obliquely pinnatifid with alt, 



rinose with w or y powder (in 1 sp lobed or entire segs; margins unchang- 



naked). ed, reflexed; sori brown in a continuous 



*Fronds farinose below. line at the ends of the free veins. 



I. Fronds deltoid or pentagonal, bare- southeastern Ar. 



ly bipinnate. N :!LEMMONI D. C. Eaton. 



N: CA1TDIJ3A Hooker. Rtstock short, scaly with narrow, 



Rtstock creeping, with narrow, rigid, pointed, rigid, dark-brown chaff; stalks 



nearly black scales; stripes tufted, 3-6' dark r'ish-brown, wiry, 4-6' long, chaffy 



long, wiry, black and shining; fronds at base with scales a little wider and 



rather shorter than stipe, deltoid-ovate, more scarious margined than those of 



pinnate; lowest pinnae with the lowest rtstock, otherwise smooth; fronds 6-7' 



inferior pinnules elongate and again pin- long, 1-1%' wide, linear-oblong, pinnate 



natifid, the 3 or 4 succeeding pairs Ian- with num deltoid or ovate, 1 or 2 pin- 



ceolate, pinnatifid into oblong segs, the natifid pinnae, lowest ones a little 



uppermost pinnae like the segs of the shorter than middle ones; upper surface 



lower; upper surface g; lower surface herbaceous-g, smooth; lower surface 



w'ish farinose; margin slightly revolute. covered with w or slightly y'ish cera- 



Southwestern Tex. (Reverchon); NM ceous powder; sori forming a narrow 



(Wright). Synonyms: N. sulphurea J. sub-marginal line; margins of segs very 



Sm. N. pulveracea Kunze. slightly recurved. Ar. 



NOTHOLAENA CRETACEA Liebm. Til. Fronds deltoid-ovate, tri-quad- 



Rtstock short, oblique, scales rigid, ripinnate at base- 

 lanceolate, with a narrow membranous N: NXVEA Desv. 



margin; stipes 2-7' long, brownish, Rtstock short, chaffy with narrow 



wiry, scaly when young; fronds 1-2' scales; stipes tufted, 4-6' long, wiry, 



long, broadly deltoid-ovate to penta- bk, polished; fronds 3-6' long, l%-2' 



gonal, tri-quadripinnatifid at base, grad- broad, ovate, lanceolate, triangular- 



uaily simpler above; ultimate segs ob- ovate or deltoid, tripinnate; primary 



long or triangular-oblong, num, crowd- pinnae mostly op, rachises nearly 



ed; upper surface more or less covered straight; pinnules long-stalked; segs 



with decid glands; lower surface cop- roundish, nearly as broad as long, ter- 



iously farinose with y or w'ish powder minal ones larger, entire or 3-lobed; 



except on the prominent dark brown upper surfaces g, smooth, lower densely 



rachises; margins more or less recurved, coated with pure w powder; sori brown, 



not covering the sporangia; spores glo- often descending the free veins half- 



bose, bk. SD Co! Baja! Ar (Parry, way to midvein. Ar; NM. 



Lemmon). Synonyms: N. Calif ornica Variety DZ ALB AT A Dav. 



D. C. Eaton. N. Candida of collectors. Segs smaller, more num, longer than 



IT: HCOilESI D. C. Eaton. broad, terminal ones rarely lobed. Upper 



Rtstock short, densely covered with Missouri to NM; Ar. Synonyms: N. 



rigid lanceolate dark-brown scales; dealbata Kunze Cheilanthes dealbata 



stipes tufted, 4-8' long, r'ish-brown, Pursh. 



wiry, shining; fronds 2-3' each way, N: PElTDIiEIil Kunze. 



nearly pentagonal, composed of 3 divis- Stipes densely tufted, dark-brown, 3- 



ions; middle one slightly stalked, rhom- 5' long; rachis and all its branches zig- 



boid-ovate, pinnatifid into a few toothed zag and fiexuous; fronds broadly deltoid 



segs, the 2d pair larger than the 1st; ovate, 3-5' each way, quadripinnate be- 



the side divisions sessile, deltoid, pin- low, gradually simpler above; pinnae 



natifid on upper side as in middle divis- alt; ultimate pinnules oval or elliptical, 



ion, but each bearing on the lower side simple or 3-lobed. Colo; NM; Ar. 



a single large pinnatifid basal seg, and **Fronds naked below, 



above it smaller segs like those of the XOTHOLAENA TENERA Gillies, 



upper side; lower surface covered with Stipes tufted, brownish, smooth and 



pale y powder. Tex; Ar. Synonyms: shining; fronds 3-4' long, ovate-pyra- 



N. cretacea of check-lists, not of Liebm. midal, bi-tripinnate; pinnae mostly opp, 



X. Candida var. 5-fido-palmato Hooker, distant, lower ones somewhat triangu- 



II. Fronds lanceolate or linear-ob- lar; ultimate pinnules ovate, often sub- 

 long, bipinnate or tripinnatifid. cordate, obtuse, smooth and naked on 

 2?: GBAYI Dav. both surfaces; considered as possibly 



Stipes tufted, l l A-^%' long, terete, only a form of N. nivia by Underwood, 



chestnut-brown, with nearly bk, rigid, Southern California; Arizona; Utah, 



linear-acuminate scales below, paler, TASNITIS Swz. 



decid scales above; fronds 2-4' long, %- Sori linear, central or submarginal; 



ly^' broad, oblong-lanceolate, once or veins reticulate. Five tropical species. 



