48 CARL CHRISTENSEN AND CARL SKOTTSBERG 



Hab. in the crater lake of Ratio Kao, c. 110 m., growing on the firm 

 moss peat (no. 6yj; also AGASSIZ!). — Fertile. -- Not recorded before. 



Area of distribution: Asia, trop. Australia, New Zealand, Polynesia, 

 Afr. orient, and adj. islands. 



2. A. obtusatum Forst. — Fuentes, Bol. 327. 



Rocks near the sea shore, probably not uncommon. 



Hab. Estern headland, humid fissures on the steep slopes of Vaintu 

 Rova, c. 275 m; Hanga Ho Orno, coast cliffs (no. 633); between Hanga Piko 

 and Pta Baquedano, not uncommon, well developed. — Fertile. 



Area of distribution: West coast of South America to Chiloe; Austra- 

 lia, New Zealand, Oceanic Islands. 



Doodia R. Br. 



*3. D. paschalis nov. spec. Fig. 1. 



Rhizomate obliquo, brevi, paleis nigris, filiformibus cum parte basali stipitis 

 subdense onusto. Stipitibus fasciculatis, strictis, parce scabris vel sublaevibus, 

 a basi ad medium atris vel nigrescentibus, sursum pallide stramineis vel fuscis, 

 basi paleis filiformibus crinitis, sursum glabris, superne late sulcatis instructis, 

 ad 15 cm longis. Lamina pinnatifida, oblanceolata vel rarius subgradatim 

 attenuata, versus basin subito contracta, ima basi saepe hastata, versus apicem 

 breve caudata, usque ad 30 cm. longa, supra medium 6 — 10 cm lata, papyracea 

 vel subcoriacea, obscure viridi; rhachide et costa mediana straminea, minuto 

 glanduloso-pubescente, superne compressa, late canaliculata; pagina superiore 

 glabra, inferiore minuto glanduloso-pubescente, postea glabra. Segmentis usque 

 ad 30-jugis, approximatis, basi confluentibus, oblongis, obtusis, maximis 3,5 — 5 

 cm longis, 6 — 8 mm latis, marginibus inaequaliter argute serratis, inferioribus 

 3 — 5-jugis subito contractis, semiorbicularibus vel triangularibus sub 1 cm. 

 longis, infimis frondium perplurimum elongatis, 2 — 2.5 cm longis. Venulis extus 

 seriem areolarum costalium plerumque furcatis, in dentes abeuntibus. Soris 

 nervo mediano valde approximatis, brevissimis (1 — 15 mm longis), plus minusve 

 lunatis, utroque latere costs uniseriatis; rarius secunda series interrupta primae 

 approximata adest. Indusiis integris, angustis. 



Hab. Eastern headland, humid fissures on the steep slopes of Vaintu 

 Rova and Tea-tea (no. 655); Rano Aroi, rocks inside the crater, c. 420 m, 

 rare. — Fertile. — A new addition to the flora. 



This new species is closely allied to D. blccJinoidcs A. Cunn. from Austra- 

 lia, at least the plant cultivated under that name and accurately figured by 

 METTENIUS (Fil. Lips. tab. 6 fig. 3-4), but BAKER (Syn. Fil.) says that the 

 genuine D. bleclinoides does not show the reduced lower pinnae of our species. 

 METTENIUS' description covers our plant very well with the exception that young 

 D. paschalis is rather densely glandulose beneath, and that, in larger leaves, 

 there are traces of a secord series of sori. Remarkable is the pair of leng- 

 thened basal pinnae which make the whole lamina hastate; sometimes only one 

 of the two pinnae is long, rarely both are abbreviated. From the common 

 Polynesian D. media R. Br. and its numerous forms D. paschalis differs in its 

 pinnae being contiguous at base, in the sori being placed close to the midrib, 

 and in the furcate veins outside the costular areoles. 



Area of distribution: Endemic. 



