Broadhurst: Struthiopteris in North America 377 



specimens are not at all reduced at the apex of the lamina; the 

 other smaller forms are but slightly reduced at the apex. 



Kaulfuss described L. Ryani from Montserrat Island, saying 

 he had seen only young specimens. Despite the reddish woolly 

 character of both surfaces, it probably belongs with striata, from 

 which he separates it because of oblong, smooth tubercles on the 

 rachis at the base of the petioles; the lower, bipinnatifid, fertile 

 pinnae suggest that he had an abnormal frond.* Raddi describes 

 his L. brasiliensis as intermediate between lineata and striata. 

 In the shape of the blade and in the small number of pinnae it 

 seems nearer the smaller S. striata plants. 



21. S. Underwoodiana Broadh. nom. nov. 



Lomaria Boryana of American authors, not of Swartz. 



Blechnum tubidare Diels (in part), in E. & P. Nat. Pfl. I 4 : 

 249. 1899. 



Plants terrestrial. Rhizome "a pronounced trunk, f though 

 mostly underground," the scales 3-3.5 cm. long, linear, rigid, erect, 

 shining, dark brown with a light margin, the whole appearing 

 tobacco brown. Sterile fronds 85-100 cm. long; stipes 18-36 cm. 

 long, often angulate, marked almost throughout by vestigial 

 pinnae, the scales smaller, soon deciduous, suddenly broadened at 

 the base, and mixed with tangled fibrillose deciduous ones, the 

 position of the fallen ones marked by fine points as in S. rufa; 

 lamina 58-70 cm. long, 25-32 cm. wide, oblong or broadly elliptical, 

 abruptly reduced at the base (the lower pinnae 4-8 cm. long, type 

 D, with vestigial pinnae), but little reduced toward the apex, the 

 terminal pinna 10-12 cm. long; pinnae 20-30-jugate, narrowly 

 lanceolate to narrowly oblong, straight or slightly curved near their 

 apices, the apex gradually acute to acuminate, the upper pinnae 

 broadly adnate or dilated on the lower side at their bases, the 

 lower ones free in at least half the lamina, the bases never auricled, 

 rounded, sessile to very short-petioled, 15-20 cm. long, 18-24 mm. 

 wide; margins entire, not revolute; leaf tissue rigid-herbaceous, 



* It is possible that the bipinnatifid character may refer to such an abnormality 

 as that mentioned under S. Schiedeana; the whole genus Struthiopteris does not contain 

 a single species with a bipinnatifid sterile frond. 



t According to Professor Underwood; Jenman says it is one or more feet high. 

 Professor Underwood thought that Jenman had modified this statement to include 

 L. Boryana Sw., which has a caudex 2-3 feet high. A plant now growing at the 

 New York Botanical Garden, which was brought back by Professor Underwood in 

 1903, has (January 1912) a densely scaly crown 3 cm. high and about 3 cm. broad. 



