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Volume 10, 1877
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Art. LXIV.—Descriptions of New Plants.

[Read before the Wellington Philosophical Society, 2nd February, 1878.]

Umbelliferæ.

Pozoa pallida.

Glabrous, rhizome stout creeping, with crowded rosulate leaves at the apex and giving off scions. Leaves ½–¾ inch in diameter, 3-foliolate, leaflets sessile, cuneate or obovate-cuneate, 3–6-lobed at the tips, coriaceous, shining, pale green; petioles 1–3 inches long, stipules lacerate. Peduncles shorter than the leaves bearing a single terminal umbel, or with two or more umbels each successively given off from the one next below it; umbels with a petioled tripartite or lobed leaf at the base, 4–8-flowered;

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flowers on slender pedicels ¼ inch long; involucres of about six simple membranous obtuse leaves. Fruit, pale, 1/10 inch long, carpels not rounded at the back.

South Island: Nelson—Roto Iti; Amuri; Lake Guyon. Canterbury—Pukunui Creek.—Altitude, 2,000-3,000 feet.

Specimens without locality or collector's name are in the herbarium of the Colonial Museum.

This species has been confused by collectors with P. trifoliolata, of which Professor Oliver considers it a variety,—an opinion with which I cannot agree, its closest affinity being with P. roughii and P. hydrocotyloides. It is easily recognized in all stages by its pale green shining foliage, and never forms the densely-matted patches so characteristic of P. hydrocotyloides, from which it is further distinguished by its less coriaceous leaves, proliferous umbels, and pedicellate flowers. It is distinguished from P. roughii by the ternate leaflets, few flowered umbels, fruit shorter than the pedicels, and carpels not rounded at the back.

A single specimen in my possession has the peduncles branched with a single pedunculate umbel in the fork of each.

Rubiaceæ.

Coprosma arborea.

A tree 20–25 feet high; trunk 8–12 inches in diameter; wood yellow; branches ascending; leaves ovate-spathulate, coriaceous, reddish below, gradually narrowed into a winged petiole shorter than the blade, veins distinct. Male flowers densely capitate, sessile, axillary or terminal; calyx narrow, deeply 4–5-cleft, minutely ciliated; corolla bell-shaped, 4–5-cleft; lobes broad, obtuse. Female flowers in 4–5-flowered fascicles; calyx 4–5-lobed, lobes obtuse, minutely ciliated; corolla 4–5-partite nearly to the base; lobes ligulate, spreading; styles slender, short. Fruit crowded; globoso-ovoid, with obscure traces of the calyx limb at the apex, white, translucent.

North Island.—From Mongonui southwards to the head of the Hauraki Gulf. Abundant on Waiheke Island.

In the “Handbook of the N.Z. Flora” this species is confused with C. spathulata* to which it is closely allied, and from which it is distinguished

[Footnote] * I append an amended description of C. spathulata, A. Cunn. A sparingly-branched shrub 2–6 feet high; branches spreading or straggling; leaves distant, orbicular-spathulate, emarginate or obcordate, abruptly narrowed into the winged petiole, blade longer or shorter than the petiole, coriaceous, veins obscure. Male flowers in 2–3-flowered fascicles; calyx 4–5-lobed; corolla funnel-shaped, 4–5-partite divided for about half its length; lobes narrow. Female—calyx bell-shaped, 4–5-cleft; corolla 4–5-partite' divided for less than half its length; segments narrow; style ½–¾ inch long. Fruit ovoid, solitary, shortly peduncled, black, shining, crowned by the limb of the calyx.

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by its arboreal habit, numerous ascending branches which are puberulous at the tips, the blade of the leaf always longer than the petiole, and never orbicular or obcordate; the densely aggregated flowers, never solitary; the bell-shaped deeply-divided corolla, shorter style, and crowded fruit.

The fruit when ripe is white and translucent, but soon becomes discoloured from decay. In the fruiting state this plant has some resemblance to Myrsine australis. It is much the largest species of the genus.

Cyperaceæ.
Schœnus vacillans.

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Culms simple, 9–18 inches long, flaccid, tufted, leafy, compressed; Leaves alternate, ascending, 2–3 inches long, 1/25 inch broad, linear acute. Spikelets 1–4 axillary, on scabrid pedicels ¼–½ inch long, dark brown; 1–2-flowered; glumes 4–6 narrow lanceolate, keel scabrid; stamens 3, bristles 3. Nuts small, whitish, slightly trigonous, not polished; stigmas 2 or 3.

North Island.—Deep gullies at the source of the Matai River, Mount Wynyard.

This species is closely allied to S. axillaris, Br., but is easily recognized by its large size, longer flaccid leaves, clustered lanceolate spikelets and narrow glumes. It has not been observed elsewhere.