210 Mr. D. Don's Descriptions of new Genera and Species 



Chffitanthera pinnatifida. II. et B. PL Mqu. 2. p. 170. t. 136. 



Ferezia pinnatifida. Lag. Mss. 



In Peruvian alpibus summis frigidissimis. Ruiz et Pavon. if. . 



Herba perennis, subacaulis, caespitosa. Radix e fibris complu- 

 ribus filo emporetico crassitie aequalibus, longissimis com- 

 posita. Caides plures, foliis duplo breviores, erecti, sim- 

 plices, unirlori, teretes, superne pilosi, vix pennam anse- 

 rinam crassitie eequantes. Folia radicalia plurima, in orbem 

 acta, patula, petiolata, profunde pinnatifida, circumscrip- 

 tione linearia, obtusa, costa dilatata, subtus convexa, ner- 

 vosa, bi- v. tri-pollicaria : segmentis subrotundo-ovalibus, 

 obtusis, inoequilateris, coriaceis, supra punctis nnmerosis 

 elevatis asperis, subtus glabris, margine setaceo-ciliatis, 

 sa3pius conduplicatis, invicem se imbricatis, unguiculari- 

 bus ; caulina paucissima (2 — 3) lineari-lanceolata, dupli- 

 cato-serrata, serraturis aristatis, semuncialia, 2 lineas lata, 

 petiolis longioribus membranaceis paginam ipsam latitu- 

 dine penissime aequantibus. Petioli lineares, dilatati, ner- 

 vosa, margine membranacei, basin versus latiores, subtus 

 striati, 2 — 3-unciales, 3 — 4 lineas lati. Flores terminales, 

 solitarii, albi. Involucrum hemisphaericum, duplici ordine 

 poly-(24 — 30)phyllum, asquale : foliolis exterioribus dupli- 

 cato-serratis (serraturis aristatis) foliis caulinis subsimili- 

 bus ; intimis ligulatis, apice rotundatis, mucronato-arista- 

 tis, margine membranaceis, integerrimis. Receptaculum an 

 tuberculatum? Floscidi omnes hermaphroditi, tequales, bi- 

 labiati ; labio exteriore ovali-oblongo, obtuse triclenticulato, 

 substantia crassa cartilaginea, marginibus inrlexis concavo ; 

 interiore membranaceo, bipartito : laciniis linearibus, atte- 

 nuatis, spiraliter revolutis. Filamenta complanata, glabra. 

 Antherce basi setis 2 simplicibus attenuatis auctae, appen- 



dicula 



