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Volume 16, 1883
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Art. XLI.—Notes on new Species of Plants.

Plates XXXIV–XXXVII.

[Read before the Wellington Philosophical Society, 13th February, 1884.]

Plagianthus linariifolia, n. s.

A slender upright dense foliaged shrub, with long fascicled leaves. Flowers not seen. Fruit of one indehiscent capsule; capsule narrow, oblong, adherent to the carpel, slightly downy at first, when mature shining black.

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1. Placianthus Linariifolia, n.s.
2. Placianthus Divaricatus, Forst.

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Hectorella Eloncata, n. s.
Hectorella Cæspitosa, Hook.fil.

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This distinct species is probably peculiar to the west coast of the South Island, while the rigid divaricating branched species of Forster is more peculiar to the east coast. In pl. xxxiv. figures of both have been given, showing the marked difference of foliage, and form of carpels. In P. linariifolia the section shows an indehiscent carpel, while P. divaricata shows a much smaller carpel, with a large, free, and downy capsule bursting irregularly.

Hectorella elongata, n. s.

A closely branched glabrous plant, forming large soft cushions on the mountains, at altitudes of 5–6,000 feet. Leaves numerous, imbricate, soft, ¼ inch long, linear-acuminate, thick at the tip, dilated and membranous at bottom, veins reticulate; flowers white or pale salmon colour, ¼ inch long, arranged in circles among the terminal leaves; petals, sepals, and bracts, linear-acute.

In vol. xiv., Trans. N.Z. Inst., this plant was figured and described in error as Hectorella cæspitosa, Hook. fil.: since the publication of that volume numerous specimens have been examined from the Mount Aspiring district, Otago, among which two distinct species were found, and to prevent future confusion among collectors both species are here figured.

Carmichælia uniflora, n. s.

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A very small rambling glabrous shrub, rooting at the nodes, branches erect, leaves fasicled, ½–¾ inch long and 1/30 inch broad, striæ 1–3. Flowers 1/5 inch long, single, on slender glabrous peduncles, with 2 minute bracteoles near the middle; calyx glabrous; teeth distinct, hooked; ovary glabrous.

This minute species is not uncommon in the Waitaki Valley, and has no doubt hitherto escaped observation from its small size. The specimens collected were found growing on rich alluvial soil, and its small proportions cannot therefore be ascribed to want of nourishment.

Sophora prostrata, n. s.

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A rigid prostrate rambling shrub 12–18 inches high. Branches interlaced and spreading close to the ground in dense patches. Leaves 1/3 inch long, glabrous; leaflets 3–5 pairs, ovate, 1/10 inch long. Flowers ¾ inch long, bright yellow, usually in pairs; calyx finely silky. Pods not seen.

This remarkable little species is not uncommon on the lower hills of the Awatere Valley, Marlborough, where it may be found forming flat patches on the ground. The flowers are not seen unless the branches are raised up, which from their great rigidity requires considerable force. No upright form of this species was seen.

Pleurophyllum hookeri, n. s.

Root forming a large mass of few or many succulent fusiform roots. Stem 2–3 feet high, angular and with numerous narrow bracts from 2–4 inches long, covered with white tomentum. Leaves few, circling the lower

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portion of stem, nearly equal in size, 9–12 inches long, 2–4 inches broad, ovate, acute at top and tapering into a long flat petiole, which in the lower leaves are covered at bottom with long silky hairs, margins minutely serrate, both sides clothed with closely appressed white tomentum which is thicker on the under side. Veins numerous, running nearly parallel at an acute angle. Flowers in globular heads. Heads numerous, ½–¾ inch diameter, racemose, and occupying one-third of the stem, pedicellate, pedicels very narrow, 1–3 inches long, bracteate, and covered with white tomentum. Flowers of the ray few, of the disc numerous, involucral scales in several series narrow, tapering to a long point, pilose on the back.

Common on the hills round Perseverance Harbour, Campbell Island. The notice of a small Pleurophyllum in the Antarctic Flora, p. 33, no doubt refers to the present species, although it now proves to be an abundant plant and much larger than then supposed. It is remarkable that so conspicuous a plant should have escaped notice, and this can only be explained by its not having hitherto been seen in flower, although the absence of the large lower leaves might have attracted attention. Many of the present species were seen in flower in the latter end of December, while few of Pleurophyllum crinitum, Hook. fil., had developed racemes at that time.

Explanation of Plates XXXIV–XXXVII.

Plate XXXIV.

  • 1. Plagianthus linariifolia, n. s.

  • 1a. Fruit of same in section.

  • 2. Plagianthus divaricatus, Forst.

  • 2a. Fruit of same in section.

Plate XXXV., A.

1.

Hectorella elongata, n. s., nat. size.

2.

Flower enlarged.

3.

Leaf enlarged.

Plate XXXV., B.

1.

Hectorella cæspitosa, Hook. fil., nat. size.

2.

Flower enlarged.

3.

Leaf enlarged.

Plate XXXVI.

Sophora prostrata; branch with leaves and flowers nat. size.

Plate XXXVII.

1.

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Pleurophyllum hookeri; plant 1/3 nat. size.

2.

Single head of flowers nat. size.

3.

Flower of the disc.

4.

Flower of the ray.

5.

Flower bract.

6.

Pappus hair.

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Sophora Prostrata. n.s.

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Pleurophyllum Hookeri, n.s.