22 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



Trichomanes capillaceum L. Sp. PI. 2: 1099. 1753. 



Trichomanes tenellum Iledw. Fil. Gen. & Sp. [text] pi. S.f. 1. 1799. a 



Trichomanes trichoideum Sw. Schrad. Journ. Bot. 1800 '-': 98. 1801 &; Sw. Syn. Fil. 

 144. 1806; Hook. & Grev. Ic. Fil. 2: pi. 199. 1831. 



Trichomanes trichoides Sw. Fl. Ind. Occ. 3: 1741. 1806. 



Trichomanes angustissimum Presl, Abh. Bohm. Gesell. Wiss. V. 5: 333. 1848. 



II. 1676. On trunks of Alsophila sp., in the forest between Purulha and Panzal, 

 Baja Yerapaz, altitude 1,500 meters, April, 1907. 



A common species throughout a largo part of tropical America, growing usually 

 upon the trunks of tree ferns. The synonymy has recently been indicated some- 

 what imperfectly by Ilieronymus/ who adopts the name T. trichoides Sw., 1806, 

 altogether disregarding T. tenellum Iledw., 1799, and citing T. trichoideum Sw. as 

 from 1806 rather than 1801. The Linmean name capillaceum, founded upon Plu- 

 nder's plate 99, figure I), representing Santo Domingo plants, is regarded by Hier- 

 onymus as of too doubtful application to warrant its being adopted for the species 

 accurately described later by Swartz. While it must be admitted that the figure 

 of Plunder is incorrect in details, its general facies, together with the accompanying 

 text, leaves little doubt as to its identity with the well known form. If, however, 

 the Linneean name capillaceum is to be discarded as too uncertain, the claim of 

 T. tenellum must be considered. This is identical with T. trichoideum Sw., over 

 which it has two years priority of publication.* 



The synonymy of the form figured by Schkuhr as T. cuneiforme, and including 

 T. schie.dianum C. Mull., is given in full by Hieronymus. This form is reduced to 

 T. capillaceum by Chrifltensen, perhaps rightly. 



Trichomanes crispum L. 



II. 1846. Cohan, altitude 1,350 meters, May, 1907. 



Trichomanes pyxidiferum L. 



II. 1463. Near Cubilquitz, altitude 350 meters, October, 1906. 



Trichomanes rigidum Sw. 



II. 1685. On moist earth in forest above Panzal, Baja Yerapaz, altitude 1,500 

 meters, April, 1907. 



Distributed as T. mandioccanum Raddi. 



Trichomanes rupestre (Raddi) v. d. B. 



I f . 354. Near Cubilquitz, altitude 350 meters, October, 1906. 



EQUISETACEAE. 

 Equisetum giganteum L.? 



II. 1990. Near Coban, altitude 1,350 meters, November, 1907. 



LYCOPODIACEAE. 

 Lycop odium clavatum L. 



II. 2095. In moist, shady situations near Cohan, altitude 1,(300 meters, March, 

 1908. 



"The copy of this work in the U. S. National Museum has the plates unnumbered, 

 this plate being b'ound as the sixth in order, 



b At the end of the brief diagnosis of T. trichoideum in Schrader's Journal, Swartz, 

 by a lapse of the pen, cites as a synonym, T. pusillum, his own species of 1788, which 

 had been illustrated by Hedwig alongside T. tenellum. In the Synopsis Filicum, 

 1806, he attempted to "correct" the error by substituting, as a synonym of T. tri- 

 choideum, T. tenellum, which rather should supersede T. trichoideum, if the Linneean 

 name capillaceum is to lie dropped. 



cEngler's Bot. Jahrb. 34: 424, 425. 1905. 



