Maxon — Lip-ferns Related to Cheilanthes myriophylla. 141 



Rhizome decumbent to suberect, massive, nodose or multicipital, with 

 tufted scales; upper surface of the segments of the lamina hairy, 

 devoid of scales. 

 Stipes densely clothed with very slender appressed scales; segments 

 of the lamina bearing a few weak, tortuous, moniliform 

 hairs above, these lightly attached. . . 1. C. myriophylla. 

 Stipes bearing numerous large, oblong, whitish, spreading scales, 

 in addition to the linear to filiform, appressed or ascending 

 scales characteristic of the group; segments of the lamina 

 rather densely villous above, the hairs coarse, widely curved 

 and flexuous, tortuous, distantly and obscurely septate, per- 

 sistent 2. C. villosa. 



Rhizome creeping (usually widely so), with few to numerous short, 

 mostly slender branches, the scales imbricate, closely appressed 

 to loosely secund ; upper surface of the segments devoid of hairs, 

 in no. 5a bearing a few minute, pale, subpersistent, stellate 

 scales. 

 Scales of the under side of the lamina nonciliate, oblique, loosely 



imbricate, not always covering the segments. . 3. C. Fendleri. 

 Scales of the under side of the lamina invariably long-ciliate (at 

 least in the basal part), widely imbricate, wholly covering 

 the segments. 

 Rhizome deciduously paleaceous, the scales relatively broad, 

 acutish to long-acuminate, membranaceous, usually 

 pale brown and concolorous, the middle portion never 

 strongly sclerotic; scales of the lamina beneath firmly 

 attached at the subcordate to cordate base. 



4. C. Wootoni. 

 Rhizome persistently paleaceous, the scales linear to lance- 

 attenuate, rigid, bright brown to blackish, strongly scler- 

 otic throughout or toward their apex; scales of the 

 lamina beneath lightly attached above the closed sinus 

 of the deeply cordate base, the lobes overlapping. 

 Fronds many, closely placed upon the numerous short, 

 sometimes thickish branches of the rhizome, these 

 often close and intricate; segments roundish or 

 irregularly oval. 

 Segments devoid of scales above ; scales of the lamina 

 beneath whitish to pale castaneous, large, much 



exceeding the segments 5. C. Covillei. 



Segments bearing a few minute, pale, stellate scales 

 above; scales of the lamina beneath bright 

 castaneous to cinnamomeous r - narrower, more 

 numerous, mostly not exceeding the segments, 

 many of them minute, very copiously ciliate, 

 entangled, forming a loose tomentum. 



5a. C. Covillei intcrtexta. 



