364 Broadhurst: Struthiopteris in North America 



The above incomplete description has been rearranged from 

 Christ's with some few additions based on von Tiirckheim's 

 specimens. The fertile frond forming part of von Tiirckheim's 

 no - 353 i s somewhat mutilated ; the two specimens afford the fol- 

 lowing additions: 



Fertile frond 130 cm. long; stipe 60-68 cm. long, light, blotched 

 with brownish, the scales few, yellowish brown; lamina 65-80 

 cm. long, the pinnae distant; pinnae 16-24-jugate, 13-16 cm. long, 

 4-5 mm. wide, heavy, with a sterile apex 1-5 mm. long, the bases 

 decidedly cordate; sporangia yellowish brown or dark brown; 

 indusium wavy and entire or irregularly broken, less lacerate than 

 in most of the petioled species. 



Christ kindly sent one sterile pinna of 6". costariccnsis. It 

 was evidently one of the upper ones, measuring 10 cm. by 13 mm. ; 

 the color is not yellow as in S. Werckleana, but a light gray-green 

 characteristic of recent specimens of 5". polypodioides and common 

 to several of the heavier species of Struthiopteris ; the vein spaces 

 vary from 16 to 18 to I cm. 



13. S. danaeacea (Kunze) Broadh. comb. nov. 



Lomaria danaeacea Kunze, Linnaea 18: 326. 1844. 



Blechnum danaeaceum C. Chr. Ind. Fil. 153. 1905. 



Rhizome oblique, very paleaceous with reddish scales. Sterile 

 fronds 10-40 cm. long; stipes clustered, 4-15 cm. long, with ap- 

 pressed scales which are larger toward the rhizome; lamina 8-10 

 cm. wide, short ovate-oblong, not gradually reduced above, the 

 terminal pinna largest, 6-9 cm. long, often with a basal lobe, 

 shining, lighter below; pinnae 2-5-jugate, ovate-lanceclate to 

 ovate-oblong, the apex serrate, the base rounded, unequally sub- 

 cuneate, free throughout, sessile, the lower pinnae short-petioled, 

 4-7.5 cm. long, 1.5-2.5 cm. wide; margins revolute; leaf tissue coria- 

 ceous;* costae raised below and chaffy with appressed scales; veins 

 close and distinct. Sporophyls with light-colored, sparsely chaffy 

 stipes; pinnae curved, numerous, long (12-15 cm. in parts of the 

 fertile laminae seen in Kew and Geneva), the apex short- 

 acuminate. 



Type: Herb. Roemer, no. 121 and 122, from Mexico. 

 Distribution: Known from Mexico only. 

 Specimens included: Siebold 125 (Delessert Herbarium, 

 Geneva; tracing, N). 



* Coriaceous as used here by Kunze and by many of the earlier writers evidently 

 corresponds to rigid-herbaceous as now used. 



