Hymenophyllum.-] 
I. FILICES. 
353 
Var. /3. cupressiforme. Frond longer, narrower, more rigid, erect; segments remote, de- 
curved, very narrow. Involucres free. — II. cupressiforme, Labill. FI. Nov. Holl. t. 250. 
f . 2 ; H. revolutum , Col. 
Throughout the Northern and Middle Islands, abundant, on rocks and trees. Lord 
Auckland’s group, J. D. H. A very common Fern in most humid parts of the globe, 
and found in England. 
2. H. unilaterale, Willdenow ; — FI. N. Z. ii. 11. So closely allied to 
H. tunbridgen.se, that the entire lips of the involucre often alone distinguish 
it; but usually a narrow plant with denser cellular tissue, more like var. /?. 
cupressiforme in habit and colour. — II. Wilsoni, Hook. Sp. Eil. i. 95 ; H. 
novo-Zelandicum, Van den Bosch (a small form). 
Northern Island : Ruahine range, etc., Colenso. Middle Island : common, Southern 
Alps, Haast ; Otago, Hector and Buchanan. Also found in England and various other 
parts of the world, often with II. tunbridgense, its real or supposed differeuces from which 
have given rise to endless discussions. 
3. H. minimum, A. Rich., FI. t. 14 ; — FI. N. Z. ii. 12. Small, 
matted, quite glabrous. Frond 1-2 in. high, broadly ovate, falcate or re- 
curved, pinnatifid, pinnate below ; segments entire or cut into 2 or 3 linear, 
obtuse, ciliate-toothed, concave, rigid lobes. Involucres terminal, free, sti- 
pitate, obovate-cuneate ; valves spinulose at the back ; lips short, toothed. 
Northern Island : on roots and stumps of trees, D’Urville, etc. Middle Island : Otago, 
Hector and Buchanan. Lord Auckland's group, J. D. H., Bolton. 
4. H. bivalve, Swartz; — FI. N. Z. ii. 12. Matted, quite glabrous. 
Ehizomes stout, wiry, creeping. Fronds 2-8 in. high, rather rigid, broadly 
ovate, 2- or 3-pinnatifid, often decurved, dark-green ; segments narrow, often 
decurved, deeply toothed. Involucres terminal, broadly ovate, turgid, base 
sunk in the frond, 2-fid to the middle, smooth ; lips quite entire ; receptacle 
included. — Hook. Sp. Fil. i. 98. t. 35 ; H. spathulatum, Col. in Tasm. Joum. ; 
Trichomanes bivalve, Forst. ; T. pacificurn, Hedw. 
Northern Island: east coast and hilly regions of the interior, D’Urville, Colenso, etc. 
Middle Island : abundant, Forster, etc. 
5. H. multifidum, Swartz ,- — FI. N. Z. ii. 12. Very similar in size, 
habit, and colour to H. bivalve, but usually more sharply toothed, rachis hardly 
winged above. Involucres axillary, often decurved or pendulous, quite free, 
large, urceolate or obovate, with the receptacle exserted. — Hook. Sp. Fil. i. 98 ; 
Trichomanes midtifidum, Forst. 
Throughout the islands, abundant, Banks and Solander , etc. Lord Auckland’s group 
and Campbell’s Island, J. D. H., Bolton. 
6. H. rarum, Br. ; — FI. N. Z. i. 12. A very delicate, membranous, 
matted, pendulous fern, glistening and pale-green, quite glabrous, margins 
entire. Frond oblong or linear-oblong, 1-8 in. long, flat, flaccid, pinnatifid, 
pinnate at the base ; stipes and rachis capillary ; segments short, broad, flat. 
Involucres large, broad, compressed, ovate or rhomboid, sunk in the ends of 
the segments; lips very short, broad, quite entire.- — Hook. Sp. Fil. i. 101; 
II. semi-bivalve, Hook, and Grev. ; H . fumarioides, Bory ; II . imbricatum. Col. 
Abundant throughout the Northern and Middle Islands, clothiug the trunks of tree- 
ferns. Lord Auckland’s group, J. D. H., Bolton. Also common in Tasmania, Chili, 
South Africa, and some parts of India. 
VOL. I. 2 A 
