1958 CLVI. FILICES. 



21. HYPOLEPIS, Bernh. 



(From hypo, under, and lejns, a soale.) 



Rhizome creeping. Fronds compound, usually large, the pinnules penniveined. 

 Sori marginal, short, in the sinus of the teeth of the pinnules. Indusium a small 

 scale oontinuius with the margin, recurved over the sorus, the spore-oases 

 attached at its base. 



The genus comprises but few species dispersed'over the tropical and subtropical regions of 

 the New and the Old World. 



1 H. tenuifolia (slender-leaved), Bernh.; Hook. Spec. F Uic. ii. 60, t. 89, 

 90 'Svn Filic. 129; Benth. Fl. Anstr. vii. 726. Fronds 4 to 5ft. high including 

 (he stipes and often above 1ft. broad, 3 or 4 times pinnate. Tertiary pmnee 

 lanceolate, deeply pinnatifid or pinnate ; fruiting pinnules or segments 2 to 4 lines 

 long crenate-toothed. Ehachis and under side of the segments usually slightly 

 hairy Sori few or several to each segment in the sinus of the teeth, the reflexed 

 scale-like indusium at first often covering the sorus but in an advanced stage 

 almost concealed under the sorus or quite withered away.— Bail. Litho. ierns. 

 Ql. 64. 



Hab • In the dense scrub North and South, but most abundant in the tropics. 



Also in the Malayan Archipelago, the South Pacific Islands and New Zealand. 



22. CHEILANTHES, Swartz. 

 (From cheilos, lip, and anthos, flower.) 

 Rhizome tufted or creeping. Fronds usually small, twice or thrice pinnate with 

 small lobed segments. Sori globular and distinct at the end of the veinlets or 

 oblong by the confluence of 2 or more, all marginal, the slightly altered teeth or 

 lobes bent over them and forming an indusium with the spore-cases inserted at 

 their base as in Pteris. Veinlets forked from a central nerve. 



A considerable genus widely spread over the tropical and temperate regions of the New and 

 the Old World. 

 Ultimate lobes of the fronds obovate or oblong 1 to 2 lines long, or rarely 



ovate-knceolate and larger 1. C. tenuifolia. 



Pinnules ending in a linear lobe usually about Jin. long 2. C. caudata. 



(See also Nothol^na, where the margin forms a spurious indusium.) 



1. C. tenuifolia (slender-leaved), Swartz. ; Hook. Spec. Filic. ii. 82, f. 87, 

 Syn. Filic. 138 ; Benth. Fl. Austr. vii. 726. Curly fern. Rhizome horizontal 

 or shortly creeping often knotty. Fronds from 2 or Sin. to 1ft. high, 

 from narrow-lanceolate to broadly ovate-triangular in outline, the stipes and 

 main rhachis glabrous or scaly-hairy. Primary pinnse nearly opposite in distinct 

 pairs, exceedingly variable in form and division, from under -^in. long with few 

 entire ovate segments, to above 2in. long and broad, elegantly pinnate a second 

 and a third time, the tertiary pinnules deeply pinnatifid, the ultimate segments 

 in all cases ovate or oblong obtuse 1 to 2 lines long, with every intermediate 

 between these extremes, or rarely the primary segments ovate-lanceolate obtuse 

 ^in. long and scarcely lobed, the whole pinnae quite flat or with a very crisped 

 aspect from the recurved or revolute margins. Sori usually numerous round the 

 margins, nearly contiguous, with the small rounded teeth or lobes bent over 

 them.— E. Br. Prod. 155 ; Bieb. Filic. Exs. 116, Fl. Mixt. n. 250 ; Kunze in 

 PI. Preiss. ii. Ill; Hook. f. Fl. Tasm. ii. 138; F. v. M. B"ragm. v. 122; Bedd. 

 Ferns S. Ind. t. 188 ; Bail. Litho. Ferns Ql. 65. 



Var. Sieberi. Rhizome short almost erect. Fronds tufted, erect, oblong in outline, from a 

 few to 18in. high, and 1 to 3in. broad. Sori punctiform often very dark. The most common 

 form in southern Queensland but also in the North. — Bail. Litho. Ferns. Ql. 66, G. Sieheri, 

 Kunze in PI. Preiss, ii. 112 ; Hook. Spec. Filic. ii. 83, t. 97 ; C Preissiana, Kunze, 1 o. 



Var. nudiuicula. Ehizome short. Fronds tufted, texture coriaceous, densely pubescent. 

 Sori usually brown. A tropical form. — Bail. Litho. Ferns. Ql. 65 ; Pteris nudiuscula, E. B'- 

 Prod. 155 ; Pellaa nudiusoula, Hook. Spec. Filic. ii. 151, 



