— 111 — 



1-1,5 (rai'o 2 mm) lato, apicc obtuso-rotundalo, versus 

 basi gradatim [jaiilo attenuato. 



Lamina crassa, coriacea, plerumque plana vel saepe 

 siiperne canaliculata, marginibus vix vel raiius revolutis, 

 cartilagineis. (^osta mediana nulla ; venis binis parallelis 

 laminam percurrentibus, in dimidio superiore sporiferis^ 

 sporangiis cum multis paraphysibus pyriformibus, eapi- 

 tulis rubris, intermixtis, duas lincas parallelas forman- 

 tibu5, in sulcis distinctis immersis. 



Obs. Détermination et description de M. C. Chri- 

 stensen, début de 1922. — R. B. 



Antrophyum (Bathia) trivittatum C. Christensen 

 sp. nov. — Planche 1, fig. f. 



Région floristique du Centre. Mont Tsaratanana. 2 100 

 mètres d'altitude. Sur les troncs. 

 Décembre igi2. .Y° 7 999- 



DIAGNOSE ORIGINALE. 



Speciei anteriori proxime afEnis, 5ed major. Foliis ad 

 12 cm longis, 3 mm latis, paulo tenuioribus, in stipeni 

 1/2 mm latam attenuatis, marginibus paulo revolutis. 

 Venis ternis, parallelis, una mediana sed lateralibus 

 omnino aequante ; sporangiis plerumque venis lateralibus 

 solum insedentibus, ita duas lineas submarginalibus for- 

 mantibus, sed interdum vena mediana etiam sorifera 



(fig- 1 f-)- 



Obs. I. The two species hère described hâve fully the 

 aspect of Vittaria, but a doser examination shows that 

 they cannot properly be refered to that genus. The veins 

 are totally invisible and can only be seen by soakening 

 the leaf. A true costa is absent, and the veins are free. 

 not anastomosing, and run parallel through the whole 

 lamina from the narro^ved stipe-like lower part, ^vhere 

 they are united into a single vascular bundle. They also 



