Underwood: The genus Alcicornium 593 



Sporangia! area on an enlarged basal portion of 



the sporophyl. 6. A. grande. 



Sporangia! area at tlie sinus of tlie second forlt of 



the sporophyl. 



Basal leaves lacininte into strap-shaped 

 lobes ; sporangia! areas oval, on a modi- 

 fied portion of the sporophyl. 12. A, Wallichu. 

 Basal leaves undulate or entire at the mar- 

 gins ; sporangia! area triangular, on the 

 unmodified surface of the sporophyl. 9. A. Stefnaria. 

 Sporangial areas on the narrow strap-like lobes of 



tlie sporophyl, only exceptionally extending 

 below the sinus, 

 Sporophyls rigid, erect in growth, gradually 



widening upwards and then forming 

 several lobes or divisions. 

 Bright-green both sides ; sporangia-bearing 



divisions broad (5-8 cm.). 7. A. I/iilii. 



White both sides but becoming greenish 

 above from the deciduous stellate scales ; 

 sporangia-bearing divisions narrow {2.5 

 cm. or less wide). 11. A. Veitchii. 



Sporophyls lax, pendent in growth. 



Sporangial areas on or near the apices of 



the lobes. ( Species of the Old 



World), 

 Basal leaves erect and foliaceous ; 



sporophyls many times forked. 13. A, Willuukii, 



Basal leaves remaining flat and disc- 

 like ; leaves 2-3 forked. 3. A, hifurcaium. 

 Sporangia! areas medial on the sporophyls. 



(Andine species.) X. A, amfinwn, 



1. Alcicornium andinum (Baker) 



Platycerium andinum Baker, Ann. Bot. 5: 496. 1891 ; New 

 Ferns 113. 1892. (Type from Peru, Spruce 472 g.) 



Range: Mountains of Peru and Bolivia, first collected by 

 Spruce. The only American species known ; strangely confused 

 by Hooker with A. bifurcatiim. 



2. Alcicornium angolense (Welw.) 



Platycerium angolense Welw.; Hooker & Baker, Syn. Fil. 



425.1868. (Type from Angola, Ws'/tf/ZJ^/f.) 

 Platycerium Elephantotis Schweinf. Bot. Zeitung 29: 361. fig. 



1 878. (Type from central Africa.) 

 Range : Tropical Africa. 



