Art. XLVII.—A. Description of two New Ferns and One New Lycopodium, lately detected in our New Zealand Forests.
[Read before the Hawke's Bay Philosophical Institute, 12th November, 1894.]
Genus 2.* Hemitelia, Br.
H. microphylla, sp. nov.
Trunk erect, 9ft. to 10ft. high, stout, girth nearly equal throughout, at base 20in., near top 21in., with numerous old and dry bleached stipites (without their pinnae) hanging down from below crown. Fronds, rather few, 15, spreading, horizontal, sub-oblong-lanceolate, broadest above middle, 5 ½ft.–6ft. long, 2ft. 6in. wide, bipinnate, grass-green above, pale-green below, softish, densely clothed with light-brown scales and hairs; rhachis dark mahogany-brown and glossy below, with a pale continuous raised line above, lateral from pinna to pinna; stipe short, sub 5in., very scaly, scales long. Pinnae linear-oblong, tip very acuminate, 13in. long, 3 ¼in. wide near base, 3 ½in. apart on rhachis, opposite, leafy to base; pinnules regular, close but not imbricate, 1 ¼in. long, ½in. wide, broadest at base, lower pair of segments pinnate and overlapping rhachis. Segments linear-oblong, entire, sometimes slightly crenulate, sub-serrate-crenate at tip; tip acute submucronate. Sori orbicular, regularly disposed at base of lowest pair of forked veins, 2–4 on a segment. Involucre rather large, concave, three-fourths round sorus, gaping, persistent, closed on costal side, pale, with dark centre, margin
[Footnote] * In “Handbook of the New Zealand Flora” included in Cyathea.
even. Receptacle pale, erect, broadly ovoid, pilose. Veins few, usually 5 pairs, the lower 2–3 pairs forked, single above, alternate, clear, white, not extending to margin. Scales very numerous and of different sizes, narrow, subulate; of stipe 1in., of frond 2–3 lines long, brown, with many dark (black) veins, the central ones parallel from base to apex, forming long vertical loops, the lateral ones anastomosing freely, the sides of scales subtranslucent, margins entire above, irregularly and slightly sharp-serrate below, their bases dilated and finely laciniate (a truly remarkable sight under a microscope).
Hab. In dense forests north-west from Dannevirke, County of Waipawa; 1894: W. C.
Obs. I. A species near H. smithii, Hook. f., but differing in several characters; as, acuminate pinnae, smaller entire segments, colour, pilose receptacles, and very peculiar and largely-veined scales of a different colour, & c. Its general appearance is also very different, especially young plants with trunks 4ft. to 5ft. high (before they bear sori): these have a very striking appearance; their pleasing vivid grass-green colour, small segments, and densely scaly fronds arrest the beholder's eye and attention.
II. I have long been of opinion that greater scrutiny should be given by pteridologists (not mere amateurs, fern-growers, and collectors) to the scales of ferns—their form, consistency, venation, colour, and structure. Nature is ever great, true, and constant in what men term small things.
Genus 11. Adiantum, Linn.
A. viridescens, sp. nov.
Plant small, indistinctly sub-pedate-deltoid, acuminate; stipe 4in.–5in., dry, channelled on upper surface, bright redbrown; frond 5in.–6in. long, bipinnate, pinnae 2, sometimes 3, pairs, tripinnate at base of 2 lower pinnae; pinnules stipitate, free, rather distant, glabrous, shining, grass-green on both sides, thin, flat; main segments narrow, sublinear, oblong, 7–8 lines long, 2 lines wide, falcate, lower margin entire; upper margin sublaciniate; barren laciniae serrate, teeth white produced sharp; fertile very broad, rounded, incurved over involucre, with orbicular space between, margins white; terminal pinnules very long, narrow ovate-acuminate; stipes, rhachises, and petioles scaly and hairy; scales and hair bright red-brown, very long and curly; basal scales dense, flat, subulate, 1in.–1 ½in. long veins netted. Involucres few (4–6) on upper margin, large orbicular, flat, with a very deep sinus corresponding with laciniae; white, membranaceous (hyaline young), with dark centre,—gaping, brown, crisped and curled in age. Veins numerous, branching, having in larger segments
and in terminal pinnule a middle vein which is pinnate and forked, 2 pairs (4) to each involucre.
Hab. Wooded district, Kumeroa, near the River Manawatu.
Obs. A neat species allied to A. fulvum, Raoul, but differing from that species in its smaller size, bright-green thin glabrous shining narrow finely cut and more stipitate pinnules, large orbicular hyaline and flat involucres, largely-branched compound venation, and its very hairy and scaly bright redbrown stipe and rhachises.
Order II. Lycopodiaceæ.
Genus 2. Lycopodium, Linn.
L. polycephalum, sp. nov.
[The section below cannot be correctly rendered as it contains complex formatting. See the image of the page for a more accurate rendering.]
Plant (dried specimens) erect, stout, 9in.–10in. high, main stem woody, as thick as a goose-quill, much and dichotomously branched throughout; branches erect, their tips (heads of spikes) drooping recurved. Leaves very numerous, mostly vertical adpressed, sometimes patent, ½in. long, subulate, semiterete, acute, entire not keeled, smooth, shining, wavy, inserted about six rows on all the stems and branches, close, imbricate. Spikes terminal on all branches, 1–2–3 together, subcylindrical, oblong-ovate, obtuse, sessile, sub ½in. long, pale yellowish-fawn colour; scales in about 8 rows, very close and largely imbricate, 1/10in. long, ovate-acuminate, rough on outside, margins serrate, tip produced long entire acute; capsules suborbicular, white, shining narrower than scale.
Hab. High land near East Cape; 1894: Mr. H. Hill.
Obs. A species allied to L. densum and to L. cernuum, particularly the latter, but differing from that species in several characters—in smaller leaves that are vertical shining and not keeled, spikes several together and not incurved, points of scales not serrate, & c.