378 Broadhurst: Struthiopteris in North America 



smooth to shining below; costae* flattened on the under side, 

 naked or with reduced scales, the surface never araneous; veins 

 not raised below, the vein spaces 10-14 to I cm. Sporophyls (in 

 the only complete one seen) no cm. long; stipes 30-40 cm. long, 

 marked at least part way by vestigial pinnae; lamina about 67 

 cm. long, abruptly reduced at the base, somewhat reduced at 

 the apex; pinnae about 30-jugate, 16-30 cm. long, 3-4 mm. wide, 

 heavy, the upper ones decurrent on the lower side, the lower with 

 occasional basal protuberances;! sporangia dark brown; indu- 

 sium quite regularly lacerate, and occasionally so to the base. 

 [Plate 28. This illustration includes a tracing from one of Jen- 

 man's unnumbered specimens, showing the usual reduction of the 

 basal pinnae in the sterile lamina.] 



Type in the New York Botanical Garden herbarium, collected 

 at New Haven Gap, Jamaica, altitude 5,500 feet, L. M. Underivood 

 985, February 4, 1903. 



Specimens included: Jamaica: Base of John Crow Peak, 

 altitude 5,000-5,500 ft., Underwood 2431 (Y). " Morse's Gap," 

 Harris 7598 (Y). 



This species has long been confused with the species Boryana 

 (Onoclea Boryana Sw.), originally described from Africa. The 

 original illustration!}: shows a very different plant with fewer, short, 

 elliptical, distant pinnae; the original description mentions an 

 arboreous stem, four feet high, and ovate-oblong pinnae which 

 are obtuse and 5-10 cm. long. Even the descriptions of this 

 species by American authors have been influenced by those of 

 the African Boryana; e. g., Jenman describes the Jamaican plant 

 as having an arboreous trunk. It has therefore been necessary 

 to describe the Jamaican species, giving it a new name, S. 

 Underwoodiana, for Professor L. M. Underwood, who collected 



* In the other species the eostae are definitely raised on the lower side; in this 

 the shining costae look as if smoothed or ironed down. 



t See the footnote under 5. violacea, p. 380. 



X Bory de St. Vincent, Voy. 2, p. 194, pi. 32; a copy is in the Astor Library, New 

 York City; a tracing has been placed in the New York Botanical Garden herbarium. 



A small plant, probably S. Underwoodiana, was brought to the New York Botan- 

 ical Garden conservatories by Professor F. S. Earle from Jamaica in 1902. It lived 

 about nine years but never seemed vigorous. In 1911 it had a rhizome 3-5 cm. in 

 diameter, 3 cm. high, and 7 sterile fronds less than 30 cm. high, which were 5-10- 

 jugate only. There were no fertile fronds. The plant in size and number of the 

 pinnae suggested 5. Shaferi; the laminae were less reduced at the base than in 5. 

 Shaferi, and the pinnae could hardly be called auricled on the lower side. 



