ADllNTEa;.— CHErLAlTTHBiE. XXXVII. 



(b) Veins reticulated. 



43. HEWARDIA, J. Smith, Soolc. Jowrn. Sot. iii. 432, t. 



16—17. 

 Adianti, sp., Aucf. 



Sort indusiate, transTerse marginal, linear, continuous; the 

 receptacles and inditsiiim as in Adiantiim, Veins uniform, retic- 

 ulated, with or without a costa ; veimles anastomosing in elon- 

 gated areoles, without included free veinlets. 



Fronds sub-coriaceous or membranaceous, pinnate bi-pinnate 

 or pedately tri-pinnate. Stipes and rachis ebeneous. Bhizome 

 short creeping ? — This genus is distinguished from Adiantum by 

 the reticulation of the reins. 

 § Sewwrdia, — Costa medial, 



Ex. : H. adiantoides, J. Sm. | H. dolosa, FSe. 



H. serrata, F4e. \ 



§ Isotes. — Costa wanting, veins equal or uniform. 

 Ex. : H. Leprieurii, Fee. 



§ CHEILANTHEiE. 



(a) Sori marginal, terminal on the veins. 



44. ADIANTOPSIS, -P«e, Gen. Ml. 145. 



AcTiNOPTEEls, J. Smith; AspiDOTis, IfuUal MS. (Sooh.) ; Httpole- 

 PIDI3 Bp., Sooker ; Adiaitti sp., Auct. ; Cheilawthis sp,, Auci. 



Sori indusiate, transverse marginal, oligocarpous, sub-orbic- 

 ular ; the receptacles punctiform at the apex of the veins. Ind/u- 

 situn roundish, thin, membranaceous. Veins simple or forked 

 from a central flexuose sometimes indistinct or 'evanescent 

 costa; venules free. • 



Fronds herbaceous, pinnate or bi-tri-pinnate, sometimes pen- 

 tangular or radiate ; pinnules (or pinnse) articulated or continuous, 

 sometimes sub-dimidiate. Stipes and rachis ebeneous. Khizome 

 short, tufted or creeping. — The adianti-cheilanthoid aspect of 

 these plants, rather than any exact technical character, has been 

 thought sufficient to separate them from Cheilanthes, and in this 

 view we doubtfully concur. With Sypolepis they certainly have 

 less direct affinity than with Cheilanthes. 



Ex. ; A. eapensis, Fie. I A. radiata, Fie. 



A. pteroides (Cheilanthes, Sw.) A. monticola (Cheilantliea, Qa/rd/n.) 

 A. califomica(Hypolepi8,ffA.^ I A. Schimperi, (Cheilanthes, Xae J 



d3 



