﻿60 7. GLEICHENIA. § 3 MERTENSIA. a DICRANOPTERIS. 



(9) G>. occanica, Muhn, Hk. Bk., Syn. Fil., 449. 



Fronds repeatedly dichotomous, above 30 c.M. long. Terminal branches 

 10—1:272 c M. long, acuminate. Ultimate segments close, to ^% m.M. broad, 

 acuminate, erecto-patent, subfalcate. Texture sub coriaceous ; under surface 

 glaucous ; rachises densely clothed with ferrugineous, lanceolate, fimbriate scales. 



Celebes; Polynesia. 



(10) G. flabellata, n. Br., Hk. Bk., Syn. Fil., 12; Hk., Fil. Exot., 

 tab. LXXI. 



Stipes firm, polished, dark-brown. Fronds repeatedly dichotomous, fla- 

 belliform, to 1 M long, more broad than long. Terminal branches 10 — 20 

 c.M. long, 272 — ^ c.M. broad, acuminate. Ultimate segments close, linear, 

 acute. Texture membranaceous; surfaces naked, not glaucous beneath. Spo- 

 rangia 1 — 6, mostly 4. 



New Guinea; Australia, Tasmania, New Zealand, New Caledonia. 



(11) €i. l£oordersii, Christ, Ann. Btz., XV, 76, tab. XHI, fig., 1, 

 a— b. 



Ultimate segments numerous (to ± 70 on each side of the terminal branches 

 of the fronds), ± 172 m.M. broad, linear, falcate, the margin revolute. Tex- 

 ture coriaceous, under surface hairy; rachises covered with deciduous, fibril- 

 lose, woolly, reddish-brown hairs besides linear, flaccid, tortuose, ciliate scales 

 and a white powder. Sori consisting of 4 — 5 sporangia. 



Celebes, Luzon. 



* (12) G. hirta, m., Rac, Flor. Btz., I, 12. 



Fronds dichotomous, to + 1 M. long, the rachises, costae and small 

 axillary buds furnished with copious, ferrugineous, lanceolate to subulate, 

 ciliato-dentate, deciduous scales. Primary branches 3 — 4 X forked. Lowest 

 internodatons 172 — ^Va c.M. long, nudate, the secondary ones 2 — 4 c.M. long, 

 subnudate. Terminal branches 772 — 25 c.M. long, linear, narrowed gradually 

 towards the apex. Ultimate segments 74 — ^ c.M. long, 2 — 4 m.M. broad, 

 linear, obtuse, subfalcate, the margin entire, revolute, the apex denticulate, 

 those of the lower forkings gradually becoming shorter, the lowest segments 

 semidecurrent. Texture membranaceo-chartaceous ; under surface caeruleo- 

 pruinose; rachises and costae glaucous. 



Malaya. 



