6 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



Elaphoglossu.ru hookerianum Underw. nom. no v. in herb. 



Acrostichum muscosum Jenman, Jlull. Bot. Dept. Jamaica II. 5: 88. 1898 (excluding 



reference to Plum. pi. 126), not A. 7nuscosum Sw., 1788. 

 Acroslichum muscosum /3 latifolium Hook. Sp. Fil. 5:231. 1864. 

 II. 1862. Coban, altitude 1,350 meters, August, 1907. 

 The following additional numbers are in the U. S, National Herbarium: 

 Jamaica: Various localities in the Blue Mountains, at altitudes of from 1,650 to 

 2,100 meters, on tree trunks of humid forested slopes, W. Harris 7518; Under- 

 wood 3212; Maxon 1302, 1454, 2667, 2696, 2715. 

 Guatemala: Trail from Senahii to Actala, Alta Verapaz, on a fallen tree trunk, 

 Maxon <fe Hay 3314. 

 This species was mistakenly described by Jenman under the name " Acroslichum 

 muscosum Sw.," while the true A. muscosum of Swartz was described by him as 

 A. lepidotum Willd., a South American species which apparently does not occur in 

 Jamaica.' 1 



The Jamaican and Guatemalan plants are identical. One of the most characteristic 

 features is the large, upright rhizome, which attains a height of 10 to 12 cm. and a 

 diameter of 2 cm. The long linear acuminate reddish-brown slender scales of the 

 rhizome, mentioned by Jenman, are oftentimes obscured by the mass of large spread- 

 ing tawny scales of the stipes. Associated with the large spreading scales of the stipe 

 is a series of smaller scales, these closely appressed. The upper surface of the lamina 

 becomes glabrous with age. 



Elaphoglossum longifolium. (Jaeq.) J. Sm. 



II. 1860. Coban, altitude 1,350 meters, August, 1907. Epiphytic. 



Elaphoglossum petiolatum (Sw.) Urban. 



II. 1943, in part. Coban, altitude 1,350 meters, September, 1907. 



II. 1945. Coban, altitude 1,350 meters, August, 1907. 



II. 2386. Coban, altitude 1,350 meters, June, 1908. 



These specimens accord well with a considerable series of the typical Jamaican plant 

 in the U. S. National Herbarium: Maxon 1323, 2648, 2668, 2717, Clute 312, these from 

 various localities in the Blue Mountains, at an altitude of from 1,650 to 1,800 meters. 



The second portion of no. II. 1943 is E. rubcscens. 



Elaphoglossum rubescens (Kuhn) Christ. 



II. 1503. Coban, altitude 1,350 meters, September, 1906. 

 II. 1941. Coban, altitude 1,350 meters, August, 1907. 

 II. 1946. Coban, altitude 1,350 meters, August, 1907. 

 II. 1943, in part. Coban, altitude 1,350 meters, September, 1907. 

 Known only from Guatemala; represented in the If. S. National Herbarium by 

 the following additional numbers, all from Alta Verapaz: ■ 



Trail between Sepacuite and Secanquim, altitude 550 to 900 meters, rocky bank 

 at border of forest, Maxon c£r Hay 3120; on a tree trunk, Maxon c(- Hay 3235. 

 Secoyote, near Senahii, on a decayed stump, Maxon & Hay 3247. 

 In size, shape, and vestiture the series of specimens cited show a wide range of 

 variation, due mostly to varying habitat, age, and degree of maturity. 



Elaphoglossum tovarense (Mett.) Moore. 

 II. 1858. Coban, altitude 1,350 meters > July, 1907. Epiphytic. 

 II. 1940. Coban, altitude 1,350 meters, August, 1907. Epiphytic. 



a Acrostichum muscosum Sw. was founded on Plumier's plate 139, but this figure is 

 cited wrongly by Jenman as representing A. lepidotum Willd. Plate 126, cited by 

 Jenman as illustrating A. muscosum, had never before been associated with that name; 

 it represents a Martinique plant showing some resemblance to E. hookerianum, but 

 probably not the same. 



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