20 



AKKIV FÖR BOTANIK. BAND 1. 



3. Trichomanes quercifolium Hook, et Grev. — Fig. 7—10. 



Hook, et Grev., Icones Filicum, 1829, t. 115. 



Syn. Trich. montanum Hook., Ic. Plantar., 1837, t. 187. 



» » Rohinsoni Bak., Journ. Linn. Soc, 9, 1867, t. 8, 



fig. B. 



» » piisiUum Hook, et Bak., Syn. Fil., ed. 2, 1883, 



p. 77 (non Sw.). 



» » jiusiUum var. quei^cifolium (Hk. & Gr.) ibid., Appen- 



dix, p. 465. 



Here I place a species, which has been the object of 

 many mistakes. It was established in 1829 as an Ecuadorian 



species, and fairly well 

 illustrated (Hook, et 

 Grev., 1. 115). In 1837 it 

 occurs again as T. mon- 

 tanum in Hooker's Ico- 

 nes Plantarum, where 

 the author says: »I 

 am not aware that this 

 can be confounded with 

 any known species of 

 Trichomanes», but he 

 discards it again in 

 the alphabetical index 

 of the same work (10th 

 volume, p. XV), refer- 

 ring it as a synonym 



Fig. 8. ITrichomanes quercifolium Hook, et iov Tr. quercifolium. In 



Grev.. from Caldas in Minas Geraes, Brazil, ^, „_ , , , , 



Regneil n. Ill, 1490, the same plant as in ^^^* ^'^^ same pianx 



fig. 7, A (X5). A stipes and base of a large appears in Joum. Linn. 



fertile frond, B two^prmary segments, C dry g^^_^ ^^ rj.^ RoUnsoni 



Baker (collected in Na- 

 tal). The quercifolium is again suspended in Hooker's and 

 Baker's Synopsis (ed. 2, 1883), and, together with Tr. liohin- 

 soni, put as a synonym under »Tr. pusillum», a name, which 

 is erroneously used here, as I am going to prove below. — 

 H. Christ does not mention Tr. quercifolium in his work »Die 

 Farnkräuter der Erde», 1897, but he evidently follows the 

 nomenclature of Hooker and Baker, for the nearest allied to 



