ADIANTllUM. 63 



fraga sarmentosa of Japan, introduced into 

 N. America, and spontaneous in Kentucky. — 

 Genus very distinct by petals unequal, 2 lower 

 longer, pistil glandular. See my monograph of 

 Saxifraga genus and tribe, including N. Gen. 

 Hemieva, jDitriclita, Steiranisia^ blended with 

 Saxifraga by HookeiS altho' as good genera as 

 his Eriogyna and LfptarJiena. 



ADIANTHUM pedatum Raf Med. fl. tab. 

 2., the only tSp. well known to all botanists. 



ADIKE Raf. 1815, An. Nat. ancient name 

 of some Nettles. A very peculiar Genus dis- 

 tinct from Urtlca, by perfect smoothness, and 

 pellucid stem and leaves, bearing in N. Ameri- 

 ca the peculiar names of Richwced, Coolweed, 

 and Clearweed, never nettles. My name mis- 

 spelt Adesia by Eaton ! I had spelt it Adicea, 

 I now restore the original Greek name of Dios- 

 corides. 



Monoical, Calix similar in both, 3partite, 

 sepals linear thick obtuse or cylindrical, erect. 

 Stamens 3 elongate no nectary. Fertile fl. with 

 persistent calix, a sessile capitate stigma. Seed 

 ovate compressed — Habit annual, stem erect 

 thick, leaves opposite petiolate serrate, very 

 smooth, trinerve, flowers estival in axillary and 

 dichotome corymbs, Sometimes a fourth part 

 added; but the Genus does not depend so 

 much on number as the consimilar peculiar ca- 

 lix. 



1. Ad. pumila Raf Urtica pumila L. stem 

 filiform dwarf, base naked, leaves ovate obtuse, 

 lower entire, upper deeply crenate-serrate with 

 an obtuse point, margin subciliolate, petiols 

 shorter than leaves : corymbs pauciflore short. 

 In the Alleghany Mts. and near Philadelphia at 

 Manayunk. Stem 2 to 5 inches, pellucid round 



