THB TASMANIAN FLOBA. 



289 



A. AUSTBALis, R.- Br. Leaves very long, mudi-divided. Ultimate pinnules 

 lanceolate, acute to obtuse, entire or nearly so. Stalk with minute acute prickles. 

 Stem 4-10 feet, thick. Leaf -base persistent. 



Common in northern parts ; Sandfly. Victoria, New South Wales, Queensland. 



A. cooperi, H., recorded from Esperance district erroneously for Cyathea 

 ounninghami. 



24. GLEICHEJSTIA. 



Sori minute, of few sporangia, naked on the back of the leaf. Leaves 

 dichotomonsly divided, persistently growing from the forks. Habit creeping. 



Pinnules entire, pale green ... ... ... ... 1. 6. Jlabellata. 



Pinnules narrow, beaded, flat .. . ... ... ... 2. G. circinata. 



Pinnules narrow, beaded, convex ... ... ... 3. G. dicarpa. 



Leaf -segments small, convex. Leaf once forked ... 4. 6r. abscida. 



1. G. PLABELLATA, R. Br. Leaves 1-4 feet high, mostly bipinnate. Pinnules 

 linear, lanceolate, entire, obtuse. 



Very common in woods and on river-banks. Eastern Australia to New Zealand. 



2. G. ciECiNATA, Swartz. Leaves often 6 feet high, stalks wiry, 2-many times 

 divided. Pinnules linear, long, numerously segmented into semi-orbicular, minute, 

 flat parts, segments sometimes with a tendency to become convex. G. minrophylla, 

 H. 



Common in scrub, tangled in the undergrowth. Southern and Eastern 

 Australia to New Zealand. 



3. G. DICAEPA, R. Br. Very similar to the last, only the segments convex, 

 forming a sack-like depression beneath, and usually shorter and erect. On 

 mountains becoming stunted and tomentose. 



Common, chiefly on heaths. South-East Australia to New Zealand. 



4. G. ABSCIDA, n. g. Closely related to G. dicarpa, but more robust. Leaves 

 1-2 feet high, glabrous, divided iiitb a single pair of pinnae, and without 

 persistent growing points. Leaf-segments small and convex. 



South of Arthur 'Range. Growing with, but distinct from, G. dicarpa. 

 (T. B. Moore.) 



25. TRICHOMANES. 



Sorus in a narrow, deep, marginal tube. Sporangia developed upon a bristle 

 that is greatly exserted at maturity. 



T. VENOSUM, R. Br. Very delicate and pendulous, irregularly once divided,, 

 2-4 inches, pale green segments broadly linear. 



Very common on trunks of tree-ferns. South-East Australia and New 

 Zealand. 



26. HTMENOPHYLLUM. 



Sori discoid, marginal, in pockets opening outwards. 

 filiform, barely exserted. Delicate, filmy, creeping ferns, 

 i. Leaves 2-4 times divided, glabrous 

 Leaves divided, densely woolly 

 Leaves entire or nearly so 

 ii. Leaf -margin entire 



Leaf -margin toothed 

 iii. Frond very narrow 



Frond broad 

 iv. Stalk and rhachis winged 



Stalk and rhachis hardly or not winged 



T 



Placenta short, or, if 



11. 



6. 



7. 



iii. 



V. 



2. 



iv. 



3. 



H. maUngii. 

 -H. marginatum. 



J£. rarum. 

 S. javanicum. 



1. H. Jlahellatwni 



