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Volume 44, 1911
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1.Descriptions of some New Species of New Zealand Plants.

[Read before the Philosophical Institute of Canterbury, 6th September, 1911.]

1. Nertera Balfouriana Cockayne sp. nov.

Herba perennis, glabra. Caulis repens, gracilis, ramosus, radicans. Folia late oblonga v. subrotundata, 2·5–3 mm. longa, 2–2·5 mm. lata, petiolata, basi rotundata v. cuneata; petiolus circ. 2·5 mm. longus, supra canaliculatus. Flores non visi. Drupa pyriformis, 7–9 mm. longa, aurantiaca.

South Island: Canterbury — Rakaia, Ashburton, and Rangitata Valleys, at altitude of about 600–800 m., R. M. Laing and L. C.; Waimakariri Valley, at about same altitude, L. C.; neighbourhood of Mount Cook, D. Petrie. Grows in Sphagnum bogs.

N. Balfouriana is at once distinguished from all the other New Zealand species by its large pyriform orange-coloured drupes, which are produced in such profusion as to quite hide the leaves. The plant forms close patches on Sphagnum cushions, the stems and leaves being frequently hidden amongst the moss. When in full fruit it is a beautiful object, and should be a rival of N. depressa Banks and Sol. as a plant for rock-gardens. The fruits are ripe during March and April.

The plant is named in honour of Professor I. Bayley Balfour, F.R.S., who, as Regius Keeper of the Royal Botanic Garden, Edinburgh, has done much to make known the horticultural capabilities of the New Zealand alpine flora.

2. Veronica Bollonsii Cockayne sp. nov.

Frutex erectus, glaberrimus, circ. 1·5 m. altus, multiramosus ramis te [ unclear: ] etibus. Folia obovato-oblonga, glabra, lucida, 2–6 cm. longa, 1–3 cm. lata. Racemi folia superantes, 10·5 cm. longi, vix densiflori, rhachibus pedicellisque brevissime pubescentibus; pedicelli 3 mm. longi. Flores palide lilacini. Calyx profunde 4-partitus, corollae tubum fere aequans, 3–3·2 mm. longus; lobi anguste lanceolati, acuti, ciliolati. Corollae tubus 3–4 mm. longus, fauce pubescens; lobi ovati, obtusi vel subacuti, 4 mm. longi. Capsula ovata, acuta 4·2 mm. longa.

North Island: Auckland—The Poor Knights Islands, L. C. Blooms in cultivation in the neighbourhood of Christchurch in April and later, but the same autumn-blooming plant may flower again in the succeeding summer.

In Trans. N.Z. Inst., vol. 38, p. 354, I referred, but with some measure of doubt, this plant to V. macroura Hook. f., for my material, with only fragmentary racemes many months old, was insufficient for accurate determination. Since that time, plants that I raised from cuttings have bloomed both in the garden of Mr. Lough, Linwood, and at Canterbury College, and have proved that the plant is a species quite distinct from any other in New Zealand. It is at once separated from V. macroura Hook. f. by the erect habit, glossy somewhat dark-green glabrous leaves with a subapiculate apex, much larger flowers

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which are not crowded very closely, glabrous calyx except for scanty cilia on the margin almost equalling the corolla-tube, and ovate obtuse or subacute corolla-segments 4 mm. long as opposed to the oblong ones 2 mm. long rounded at the apex of V. macroura. The season of flowering is altogether different. Whether V. Bollonsii is identical with the Whangarei plant found by Colenso and referred by Hooker to V. macroura I do not know. This latter species, in my estimation, is found only in the East Cape district, the var. dubia Cheesem. being a good species as well as the unnamed plant growing in the neighbourhood of Wellington, and which I followed Hooker in referring to V. macroura, but considered distinct enough to warrant a varietal name (Trans. N.Z. Inst., vol. 39, p. 361). I also consider V. Cookiana Colenso as distinct from V. macroura.

V. Bollonsii is dedicated to Captain J. Bollons, to whom not only New Zealand botany, but zoology also, owes much.

3. Veronica Dorrien-Smithii Cockayne sp. nov.

Frutex parvus paulo ramosus, ramulis ± incano-pubescentibus. Folia sessilia, oblonga, elliptico-oblonga vel elliptico-lanceolata, circ 5–6 cm. longa, supra glabra, subtus ad costam pubescentia. Racemi folia aequantes vel paulo superantes, minute pubescentes. Calyx brevis, profunde 4-partitus, 1·9 mm. longus; lobi late ovati, acuti vel apiculati, ciliati. Corollae tubus 2·5–2·8 mm. longus, fauce pubescens; lobi obovati, 2·8 mm. longi. Ovarium glabrum; stylus vix exsertus. Capsula late ovata, 4 mm. longa, calycem duplo excedens.

Chatham Island: Growing on peaty ground at margin of Lake Tekua Taupo, at an altitude of 240 m. Herb. Cockayne No. 8003. Flowers in December and January; seed ripe in February and March, V. Dorrien-Smithii is allied to V. Dieffenbachii Benth., but is a much smaller plant, and though the branches are straggling they are not widely divaricating. It differs also in the hoary pubescent more slender stems, broader light-green not whitish-green leaves, the very small bracteoles and much shorter racemes. It is a variable plant, but it does not seem to pass into V. Dieffenbachii. The stems may be conspicuously hoary or almost glabrous. In one example the leaves measure 9 cm. long by 3·2 cm. broad, in another they are 5 cm. long and 2·8 cm. broad with internodes 2·5 cm. long. The flowers are sometimes lavender at first, then fading to white, or they may be white from the beginning.

A plant growing under the waterfall at Te Awatapu is so distinct as to merit a varietal name if it is constant from seed. The stems are slender and straggling. The leaves are narrower than the type, darkish-green, 5·5 cm. long and 1 cm. broad; the midrib is purple; the raceme slender, half as long again as the leaves, with the flowers rather distant; the pedicels and base of the calyx dark red-purple and the stigma hardly exserted. The flowers are lilac, changing to white. The plant is in cultivation in my garden, and there is a specimen, No. 8005, in my herbarium.

The species is called after Captain A. A. Dorrien Smith, D.S.O., who recently collected what I take to be a form in Chatham Island, and who likewise is paying great attention to the cultivation in England of New Zealand trees and shrubs.

4. Celmisia lanceolata Cockayne sp. nov.

Herba perennis Celmisiae coriaceae habitu. Folia ensiformia vel lineari-lanceolata, circ. 24–28 cm. longa, 2–2·6 cm. lata, acuta, rigida,

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coriacea, margine valde recurvo, supra longitudinale sulcata, glauca, cuticula pellucida vestita, subtus dense sericeo-tomentosa; nervus medius supra luteo-aurantiacus, prope basim 3–5 mm. latus, subtus carinatus. Scapi compressi vel teretes, circ. 32 cm. longi, niveo-lanati; bractae numerosae, magnae, ensiformes, scapo adpressae. Capitulum 7·7 cm. diamet.; involucri squamae lineares, acuminatae, scariosae, brunneae ad basim carnosae. Flosculi radii plurimi, angusti, 3·6 cm. longi. Achenium minute pubescens.

South Island: Southland—Longwood Range near summit, but not common, J. Young! H. Reichel! Flowers in January.

Celmisia lanceolata is intermediate in character between C. coriacea Hook. f. and C. Armstrongii Petrie. It is best distinguished by the large heads, but not so large as reached by C. coriacea, the long narrow rays, the stiff woolly scapes with many leaf-like ensiform bracts, the long dull glaucous or yellowish-green linear-lanceolate leaves in erect rosettes with a conspicuous yellow or even orange midrib and widely recurved margin, the broad pale leaf-sheaths, and the very close silvery tomentum.

The scape when compressed is about 6 mm. broad; it is densely woolly with long white matted hairs. The bracts are ensiform, concave on the upper surface, about 11 cm. long by 1 cm. wide, pale yellowish-green with a brownish-yellow midrib. The involucral bracts are green at the fleshy base but brown elsewhere, ciliate, more or less glabrous elsewhere, and about 2·3 cm. long and 3 mm. wide.