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Volume 53, 1921
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Art. XLIII.—Unrecorded Plant-habitats for the Eastern Botanical District of the South Island of New Zealand.

[Read before the Philosophical Institute of Canterbury, 1st December, 1920; received by Editor, 31st December, 1920; issued separately, 8th August, 1921.]

This paper records the habitats of certain plants growing in the Eastern Botanical District of the South Island as defined by Cockayne (1). Only such plants are included in the list as have not previously been recorded from this district or are of rare occurrence; or such as have been omitted from published lists of the florulae of defined areas; or such, again, as add to our knowledge of their distribution.

No catalogue has been prepared of the species occurring in the above district other than that of J. B. Armstrong (2), and, as it is by no means certain that all of his identifications were correct, there is room for a revision of the flora. Again, Armstrong's habitats are so vague as to be of little service to students of this district. Most of the plants named in this paper have already been recorded from Canterbury, though the specific habitats given are new.

Twelve native plants are added to the sixty-eight already recorded by Dr. Cockayne as occurring in the Riccarton Bush, Christchurch (3 and 4). Hymenophyllum minimum is recorded from this botanical district for the first time. Helichrysum Purdiei has previously been collected in Canterbury by Dr. Cockayne, Professor Wall, and Mr. H. H. Allan. Eryngium vesiculosum and Deyeuxia Billardieri are new records for Banks Peninsula. The habitat mentioned for Carex Berggreni is the most northerly for this species, while the genus Gahnia seems to have eluded the notice of observers since Armstrong recorded five species in his catalogue (2). The recorded habitat for Gleichenia Cunninghamii is worthy of note.

Aciphylla Colensoi Hook. f. var. maxima Kirk. In stream-bed at foot of patch of Nothofagus Solanderi between Hororata and South Malvern.

Agropyrum scabrum Beauv. Hagley Park, Christchurch.

Angelica geniculata Hook. f. Upper Rakaia Bridge, on the island.

Asplenium flabellifolium Cav. Riccarton Bush, Christchurch.

Asplenium Lyallii Moore. Mount Oxford; Mount Somers; Omihi Hills.

Asplenium Richardi Hook. f. Kaituna Bush; Balgueri Valley, Akaroa.

Astelia nervosa Banks & Sol. Riccarton Bush, Christchurch.

Blechnum Patersoni Met. Kaituna Reserve.

Blechnum penna marinum Kuhn. Riccarton Bush, Christchurch.

Blechnum vulcanicum Kuhn. Kaituna Reserve, Omihi Hills.

Bulbinella Hookeri Benth. & Hook. Summit Road, at head of Le Bon's Bay. This is a “species inquirendae” of Laing (5).

Carex Berggreni Petrie. Arthur's Pass, close to the railway-station.

Carmichaelia Monroi Hook. f. Left bank of the Rakaia, quarter of a mile from the lower bridge, near the Mead Road.

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Carmichaelia subulata Kirk. Riccarton Bush, Christchurch.

Carmichaelia sp.? Shingle terrace, Birdling's Flat. Apparently close to or a form of C. subulata, but so prone as not to exceed 2 in. in height.

Celmisia Mackaui Raoul. This disappearing species is growing freely on the upper part of the cliffs at The Caves, Akaroa.

Cheilanthes Sieberi Kunze. Canterbury Plains, Templeton.

Cheilanthes tenuifolia Swartz. Two plants of this also fast-disappearing species were gathered on Birdling's Flat, near Lake Forsyth.

Clematis afoliata Buch. Abundant in the gorge of the Hurunui River near Ethelton.

Clematis australis Kirk. Le Bon's Bay; Rakaia Gorge; River Grey.

Clematis foetida Raoul. Rakaia Gorge.

Corokia Cotoneaster Raoul. Rakaia Gorge.

Cyclophorus serpens C. Chr. Riccarton Bush, Christchurch.

Cystopteris novae-zealandiae Armstr. Mount Oxford, 1,000 ft. This fern is still common at about the same level on Mount Somers where it was noted and recorded by Potts (6).

Dacrydium cupressinum Soland. Mount Grey, where it was once fairly common.

Deyeuxia Billardieri Kunth. On coastal rocks at Akaroa beyond the abattoirs.

Dianella intermedia Endl. Beside the beech plantation near the source of the Omihi Stream; River Grey.

Drosera binata Labill. Swamp near intersection of road from Lincoln College and that between Greenpark and Springston.

Dryopteris pennigera C. Chr. Omihi Stream.

Dryopteris punctata C. Chr. Riccarton Bush, Christchurch.

Echinopogon ovatus Beauv. Mount Grey.

Elaeocarpus Hookerianus Raoul. Mount Grey; Kaituna Reserve, Banks Peninsula.

Erectites prenanthoides DC. Riccarton Bush, Christchurch.

Eryngium vesiculosum Labill. On shingle close to the outlet to Lake Forsyth; on roadside exactly two miles beyond the rabbit-proof fence on the road to Akaroa.

Gahnia sp.? Near the source of a stream between the River Grey and the Little Grey River. Probably G. lacera.

Gleichenia Cunninghamii Heward. This fern was collected on Mount Somers on an open shingle-slope, facing north, at an elevation of 3,500 ft. The only shelter from the howling nor'-westers was a boulder about 18 in. high, while from the glare of the sun there was none.

Helichrysum Purdiei Petrie. Bed of River Grey; Mr. Anderson, of West Oxford, has sent me specimens of this rare plant from hear the source of Gammon's Creek, on Mount Oxford.

Hoheria angustifolia (Raoul) Cockayne. Rakaia Gorge.

Hymenophyllum minimum A. Rich. Near source of Gammon's Creek, Mount Oxford.

Iphigenia novae-zealandiae Baker. Tarn near Lake Coleridge.

Juncus caespiticius E. Mey. Beside water-race, Rolleston.

Juncus pallidus R. Br. Swamp between Kaituna and Birdling's Flat.

Korthalsella Lindsayi Engl. Island in Rakaia Gorge; parasitic on Myrtus obcordata and on Coprosma rotundifolia.

Korthalsella salicornioides Van Tiegh. On Leptospermum ericoides, at Kaituna Reserve; abundant.

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Leptocarpus simplex A. Rich. Inland shore of Lake Ellesmere; head of Le Bon's; Barry's Bay; Onawe Peninsula.

Leptolepia novae-zealandiae Kuhn. Mount Oxford, 1,500 ft.

Libertia ixioides Spreng. Island in Rakaia Gorge; Mount Grey.

Loranthus micranthus Hook. f. Riccarton Bush, Christchurch.

Mariscus ustulatus C. B. Clarke. Roadsides between Tai Tapu and Motukarara.

Metrosideros lucida A. Rich. Abundant on hill near Omihi; also on shore of Lake Coleridge.

Muehlenbeckia ephedrioides Hook. f. This plant has been recorded from the shingle ridge near the mouth of the Rakaia River, and it is now recorded from the end of the same ridge, twenty miles or so farther north, near the outlet to Lake Forsyth, where it is the commonest plant in the first zone of vegetation. It is abundant on the beach shingle at Otaio, in South Canterbury; old bed of the River Waimakariri, not far from the Paparua Prison, beyond Yaldhurst; banks of stream near Cust.

Nothofagus Solanderi (Hook. f.) Oerst. Hills near source of Omihi Stream.

Olearia arborescens Cockayne and Laing. Mount Grey; common in light bush.

Ophioglossum costatum R. Br. Mount Grey; vicinity of Lake Coleridge.

Panax simplex Forst. Mount Grey.

Parietaria debilis Forst. Riccarton Bush, Christchurch.

Parsonsia capsularis (Forst. f.) R. Br. var. rosea (Raoul) Cockayne. Island in Rakaia Gorge.

Paesia scaberula Kuhn. Omihi; Mount Grey; Mount Oxford.

Polypodium diversifolium (Willd.) C. Chr. Riccarton Bush, Christchurch.

Polystichum vestitum Presl. Riccarton Bush, Christchurch.

Pseudopanax ferox Kirk. Island in Rakaia Gorge.

Raoulia Monroi Hook. f. Old bed of Waimakariri; island in Rakaia Gorge; Amberley Beach; Maronan Road, Ashburton.

Scirpus sulcatus Thouars var. distigmatosa Clarke. Between Greenpark and Springston, in manuka swamp.

Tetrapathaea australis Raoul. Kaituna Reserve.

Uncinia leptostachya Raoul. Riccarton Bush, Christchurch.

Urtica incisa Poir. Outlet to Lake Forsyth.

Utricularia monanthos Hook. f. Tarns near Lake Coleridge.

References.

1. L. Cockayne, Notes on New Zealand Floristic Botany, Trans. N.Z. Inst., vol. 49, p. 65, 1917.

2. J. B. Armstrong, A Short Sketch of the Flora of the Province of Canterbury, with Catalogue of Species, Trans. N.Z. Inst., vol. 12, p. 325, 1880.

3. L. Cockayne, Riccarton Bush—List of the Flowering-plants and Ferns of Riccarton Bush, 30th July, 1906.

4. —–, Some Hitherto-unrecorded Plant-habitats, Trans. N.Z. Inst., vol. 46, p. 63, 1914.

5. R. M. Laing, Vegetation of Banks Peninsula, Trans. N.Z. Inst., vol. 51, p. 355, 1919.

6. T. H. Potts, Out in the Open, p. 253, 1882.

7. L. Cockayne, Some Hitherto-unrecorded Plant-habitats, Trans. N.Z. Inst., vol. 48, p. 205, 1916.