Broadhurst: Struthiopteris in North America 371 



Lomaria longifolia Schlecht. Mem. Acad. Brux. 15: 49. 

 1842. 



Lomaria spectabilis Liebm. Vid. Selsk. Skr. V. 1: 235. 1849. 



Lomaria acrodonta Fee (?), Mem. Foug. 8: 70. 1857. 



Blechnum ornifolium C. Chr. (in part). Ind. Fil. 157. 1905. 



Plants terrestrial. Rhizome (not seen), the scales (in Guate- 

 malan species at least) large, 2.5-3 cm. long, 5-10 mm. wide, more 

 or less plicate, burnt umber. Sterile fronds 1. 1-2 m. long; stipes 

 70-80 cm. long, irregularly angulate, light-colored (and shining in 

 the Guatemalan species), the scales yellowish brown to snuff- 

 colored, very deciduous; lamina 45-86 cm. long, 20-50 cm. wide, 

 oblong, but slightly or not at all reduced at the base (type A, 

 without vestigial pinnae), gradually reduced at the apex (except 

 in the smallest forms which are not reduced),* the rachis with 

 few scales and usually fibrillose in the channel; pinnae 18-25- 

 jugate (8-15 in the smaller forms), lance-oblong, straight or some- 

 what curved (falcate in the smaller forms), the apex serrate, 

 acuminate to long-acuminate, often abruptly so, the base rounded 

 or even tapering (the pinnae all free in the smaller fronds), the 

 lower pinnae long-petioled, 24-36 cm. long (9-15 in the smaller 

 forms), 1.8-3 cm - wide; margins entire to finely serrate, more or 

 less cartilaginous; leaf tissue membranous to herbaceous or barely 

 rigid-herbaceous, the surface sometimes shining, the costae finely 

 fibrillose or naked; veinsf not raised, but distinct below, the vein 

 spaces]: 13-18 to I cm. Sporophyls 50-160 cm. long; lamina 38- 

 100 cm. long, slightly or not at all reduced at the base, gradually 

 reduced at the apex; pinnae 15-26-jugate, 8-20 cm. long, 3-5 mm. 

 wide, with a sterile tip 2-5 mm. long, more or less petioled; spo- 

 rangia dark brown; indusium delicate, narrow, and sparingly 

 lacerate. 



Types: i. (Lomaria Schiedeana) Mexico, Schiede 781 (Berlin; 

 fragments and tracing, Y). 2. (Lomaria longifolia) Mexico, Cor- 

 dilleras, Vera Cruz, altitude 4,000 ft., H. Galeotti 6406, 1840 

 (Kew and also Delessert Herbarium, Geneva; tracings, Y). 



Distribution : Apparently confined to Mexico and Guatemala- 



Specimens included: Mexico: Herb. Rovirosa, no. 846, 

 Chiapas, "Habitat inter pago San Bartolo et Las Nubes," alti- 



* The type of L. Schiedeana is a small plant and is not reduced at the apex. 



t The vein apices are so swollen in one Guatemalan plant that the true carti- 

 laginous margin seems almost intramarginal. 



$ Vein spaces 14-16 in the type of 5. Schiedeana and in all the larger specimens, 

 except possibly the Galeotti specimens. 



