10 PATAGONIAN EXPEDITIONS: BOTANY. 



rather imperfect. I, therefore, do not translate it, but only refer to the 

 original description. 



According to C. Christ. Ind. Fil., p. 220, this fern is supposed to belong 

 to the genus Dennstcedtia. 



Add Macl., p. 132 : 



DRYOPTERIS Adans. 



D. FILIX-MAS (L.) Schott. var. ELONGATA (Ait.) C. Chr. 

 Falkland, widely spread in temperate regions, also in S. America, but 

 scarcely occurring south of Brazil (Skottsberg). 



D. SPECTABILIS (Fee). (Plate IV, 1-4.) 



Folia elata, c. 12 dm. alta; stipes crassus, c. 4 dm. longus, inuna facie 

 sulcatus, in altera squamis plus minus fragmentariis vestitus, basin versus 

 squamis atrobrunneis, subnitentibus, ad 2.5 cm. usque longis, angustis, 

 cuspidatis, dense confertis barbatus ; rachis utrinque ferrugineo-pilosa vel 

 subtomentosa, in facie superiore sulcata; frons ambitu ovalis, robusta- 

 subtus ad nervos hispida, inferne saltern 4-pinnatisecta, pinnis subopposi- 

 tis, lanceolatis vel ovato-lanceolatis, segmentis crenatis, marginibus recur- 

 vatis ; sori in utroque dimidio pinnularum uniseriati ; spori oblongi, glabri, 

 diaphani. 



Description (of the West Patagonian specimens). Stipe thick, on 

 one side sulcate, on the other (the opposite) sparingly covered with 

 fragments of scales, below densely covered with dark brown, very narrow, 

 cuspidate scales up to 2.5 cm. long; rachis all over densely covered 

 with small, ferruginous hairs, nearly subtomentose, on the upper side 

 sulcate ; frond oval, robust, on its under side hispid along the nerves, 

 at the base at least 3-pinnate ; pinnae subopposite, lanceolate or ovate- 

 lanceolate ; pinnulae crenate with recurved margins ; sori arranged in a 

 single row on both sides of the middle nerve of the pinnulae ; spores oblong, 

 glabrous, diaphanous. 



W. Patagonia by Rio Aysen ; in Chili; Juan Fernandez I. 



The rank of species has been given to the West Patagonian specimens, 

 but, according to C. Chr., Ind. Fil., p. 490, D. spectabilis (Phegopteris 

 spectabilis Fee) represents only a variety of Dryopteris subincisa (Willd.) 

 Urb. Not having any specimen of the latter at my disposal and, conse- 

 quently, not being able to state the difference between the typical D. 



