Art. XLVI.—Description of a new Species of Senecio.
[Read before the Wellington Philosophical Society, 28th February, 1883.]
A Large shrub or small tree 10–18 feet high, with spreading branches. Leaves 3″–7″ long, 1¼”–2½” wide, crowded near the ends of the branches,
broadly lanceolate-acuminate, or ovate-acuminate, narrowed into a broad base, sessile, quite entire, densely clothed with white tomentum beneath. Flowers in erect terminal panicles sparingly leafy, 4″–8″ long; branches and involucre glandular or glandular pubescent: heads on short pedicels, involucral leaves in one series: ray-florets 12–14, narrow, contorted: disc florets about 20, perfect, regular, anthers with short tails. Achenes grooved, pappus white, scabrid.
Hab. Herekopere Island, T. Kirk; South Cape Island. Not observed on Stewart Island.
The main stem of this handsome species is often from 8″ to 12″ in diameter, branches distant, usually wide spreading and destitute of leaves below. In all stages they are thickly marked with the scars of fallen leaves. In the recent state the foliage is glossy and coriaceous, but these characters disappear in drying. After a continuance of rainy weather the tomentum becomes somewhat loose and gives a rugose appearance to the lower surface of the leaves. The bracts are always membranous, and those at the base of the panicles, which equal the ordinary leaves in size, are more or less recurved. Most frequently the panicle is simple, but occasionally its lower branches are compound; after flowering, the main axis becomes elongated and the panicle loses much of its original compactness. The panicle is always glandular and more or less viscid.
This fine plant approaches S. huntii of the Chatham Islands in habit, cicatricose branches, foliage and leafy inflorescence: but the structure of the flower allies it to S. sciadophilus and S. perdicioides, although its rays are much longer and the heads much larger. The narrow contorted yellow rays are widely different from the broad compact white rays of S. huntii: in this respect the latter resembles S. glastifolius and S. hectori.
Mr. Charles Traill of Stewart Island received living plants from the natives several years ago and has had them under cultivation, but they have not yet flowered. I collected the plant on sea-cliffs on Herekopere Island and was informed by an intelligent half-caste that he had collected it on South Cape Island. It does not appear to be known elsewhere, so that it further resembles S. huntii of Pitt Island in being restricted to a very limited area.
New Zealand botanists are specially indebted to Baron von Müeller for his excellent account of the vegetation of the Chatham Islands, so that I have great pleasure in connecting his name with so striking a plant.
The following is a list of the best-known mineral springs, full details concerning which are to be found in the official Laboratory Reports, Trans. N.Z. Inst., and other similar publications:—
[The section below cannot be correctly rendered as it contains complex formatting. See the image of the page for a more accurate rendering.]
|No||Name and District.||Temp, Fahr.||Solid Grains per pint.||Chemical Character.||No.||Name and District||Temp, Fahr.||Solid Grains per pint.||Chemical Character.|
|1||Ohaeawai, Auckland||60–116||16.8||Acid, Aluminous.||28||Crow's Nest Spring, Taupo||170||18.0||Saline.|
|2||Waiwera "||110||17.7||Alkaline, Saline.||29||Waipakahi "||98–120||2.8||Sulphurous.|
|3||Puriri "||60||67.1||Alkaline, Carbonates.||30||Te Hukahuka "||116||1.8||Sulphurous.|
|4||White Island Lake, Bay of Plenty||97–212||1850.8||Strongly Acidic.||32||Parkes' Spring "||Cold||25.1|
|5||White Island Springs, Bay of Plenty||210||207.7||Strongly Acidic.||34||Onetapu "||70||58.0|
|6||Pink Terrace Geyser, Rotomahana||208||19.3||Sulphurous.||35||Roparoa, Waiapu||Cold||Saline, Bituminous.|
|7||White Terrace Geyser, Rotomahana||210||18.0||Alkaline.||36||Manutahi, "||Cold||Saline, Bituminous.|
|8||Turikore, Whakarewarewa||96.120||10.9||Sulphurous.||37||Pepot, "||Cold||Hydro-carbon Gas.|
|9||Te Koutu Spring, Rotorua||90.180||9.1||Alkaline.|
|10||Koreteoteo "||214||13.0||Alkaline Caustic.||38||Waipaoa, Poverty Bay||Cold||Bituminous.|
|11||Kuirua "||136.156||9.9||Alkaline.||39||Waipiro, Waiapu||144||Calcareous, Bituminous.|
|13||Cameron's Bath "||109.115||14.3||Acid.||40||Wallingford, Wellington||60||10.4||Acid.|
|14||Ariki-kapakapa "||160||6.6||Acid.||41||Pahua "||Cold||184.2||Alkaline.|
|15||Perekari "||130.150||7.0||Acid.||42||Barton's Spring "||Cold|
|16||Ti Kute "||100.2126.1||Sulphurous.||43||Akateo (a) "||Cold||62.4||Alkaline.|
|17||Te Mimi "||90.112||3.8||Acid.||44||" (b) "||Cold||4.8||Sulphurous.|
|18||Te Kauwhanga "||80.100||8.0||Acid.||45||Hanmer Plain Springs, Amuri||90.104||10.8||Alkaline.|
|19||Painkiller Bath "||204||16.0||Acid.|
|20||Sulphur Bay Spring "||90.100||5.6||Acid.||46||Sumner Lake Springs, Hurunui||93||2.3||Acid, Saline.|
|21||Otumuhika (a) Taupo||100.150||1.5||Sulphurous.|
|22||" (b) "||150||3.4||Sulphurous.||47||Amberley Spring, Canterbury||Cold||11.7||Chalybeate.|
|23||" (c) "||78||1.2||Sulphurous.|
|24||Ruahine "||190||19.1||Sulphurous.||48||Wickliffe Bay Spring, Otago||34.6||Saline.|
|26||McMurray's Bath "||126||4.2||Sulphurous.||49||Gibson's Spring, Southland||Cold||2.3||Alkaline.|
|27||Alum Cave Spring, Taupo||60||7.1||Sulphurous.|