20 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



the pinnae about 20 pairs, approximate, subfalcate, triangular-ovate, unequally sub- 

 acute in drying, with 10 to 14 pairs of simple excurrent veinlets, the 4 or 5 lowermost 

 pairs extending to the narrow sinus, there falsely connivent by a translucent mem- 

 brane; sori large, borne toward the extremity of the once-soriferous veinlets, there 

 coniluent with age, forming a conspicuous submarginal band around the lobe and 

 extending beyond the sinus nearly to the costa; indusia whitish, reniform, incon- 

 spicuous, greatly reduced but persistent. 



Described originally by Captain Smith upon his numbers 707 and 667, collected by 

 Baron H. von Turckheim in Alta Verapaz, Guatemala; of these no. 767 may be desig- 

 nated as the type. Captain Smith's no. 1556, from the same region, is the same. The 

 best examples, however, are specimens collected by Baron von Turckheim during 1907 

 near Panzal, Baja Verapaz, Guatemala, and distributed as no. II. 1690. 



Dryopteris paucipinnata is related to the South American D.feiidhri (D. C. Eaton) 

 Kuntze, founded on Fendler's no. 372, from Tovar, Venezuela. From this, as deter- 

 mined by an examination of the type specimens in the Eaton Herbarium, courteously 

 lent by Professor Evans, it differs conspicuously in its very slender stramineous 

 scarcely chaffy stipes and in its few spaced mostly alternate and narrowly long- 

 cuneate pinna}, these having the segments more acute and at a smaller angle to the 

 midvein and the sori borne very much closer to the margin. The most striking 

 feature lies in the scant and open appearance of the frond, this due to the distant 

 pinme being greatly narrowed at the base. Superficially only, the plant has on this 

 account considerable resemblance to D. obliterata (Sw.) C. Chr. 



Dryopteris radicans (L. ) Maxon, Contr. Nat. Herb. 10: 490, 491. 1908. 



II. 1679. Panzal, Baja Verapaz, altitude 1,200 meters, on rocks, April, 1907. 

 The synonymy of this species has recently been given in full by the writer (loc. cit.). 



Dryopteris pterifolia (Mett.) Kuntze. 



II. 2181. Near Coban, altitude 1,350 meters, March, 1908. 



Determined by Mr. Christensen, who will shortly publish upon it elsewhere. 



Dryopteris tuerckheimii (Donn. Sm.) C. Chr. 



II. 1200. Coban, altitude 1,350 meters, January, 1907. 



Known only from Guatemala; noteworthy for the dense paleaceous covering of the 

 deeply channeled stipe and rachis. 



Olfersia cervina (L.) Kunze. 



II. 418. Cubilquitz, altitude 350 meters, July, 1907. 



Specimens collected in previous years by Baron von Turckheim at this same locality 

 (/. D. S. 8044 and 8484), also Cook & Boyle 567 from Sepacuit£, Alta Verapaz, and 

 the only British Honduras specimen seen (leg. Blaucaneaux) , agree in their very wide 

 pinna 1 and are rather different from the typical West Indian form. 



Phanerophlebia remotispora Fourn. 



II. 1856. Coban, altitude 1,350 meters, June, 1907. 



Poikilopteria donnell-smithii (Christ) Maxon. 



(fymnopteris donnell-xmithii Christ, Bull. Herb. Boiss. II. 6: 289. 1906. 



11.1492. Cubilquitz, altitude 350 meters, August, 1907. Epiphytic. 



The use of this generic name has been discussed by Doctor Underwood." 

 Polybotrya caudata Kunze. 



II. 148. Cubilquitz, altitude 350 meters, July, 1907. 



Received as P. osmundacea. Doctor ( 'hrist has recently published upon the several 

 related species of this genus. *> 



" Hull. Torr. Club 33: 003-605. 1907. 

 6 Bull. Herb. Boiss. II. 6: 166-168. 1906. 



