Tas. 8550. 
OLEARIA sEMIDENTATA. _ 
Chatham Islands. 
ComposiTagE. Tribe ASTEROIDEAR. 
OxeariA, Moench.; Benth, et Hook. f. Gen. Plant. vol. ii. p. 276. 
Olearia semidentata, Dene ex Hook. f. Fl. Nov. Zel. vol. i. 115; Hook. f. 
Handb. New Zeal. Fl. p. 124; Buch. in Trans. New Zeal. Inst. vol. vii. 
: , t. xiv.; Kirk, Students’ Fl. p. 264; Cheeseman, Man. New Zeal. 
Plora, p. 280; Dorrien Smith in Kew Bull. 1910, pp. 120-126, cum icon. ; 
affinis O. chathamicac, T. Kirk, foliis lineari-oblanceolatis latioribus 
Frutex parvus, parce ramosus, usque ad 1 m. altus; rami graciles, errabundi, 
pilis albidis appresse lanati. Folia numerosa, conferta, subpatula, lineari- 
oblanceolata, acuta, basi gradatim angustata, 4-7 cm. longa, 0°5-1 em. 
lata, superne serrulata, inferne integra vel subintegra, juniora supra glabra 
vel leviter lanata, subtus floccoso-lanata, nervis ascendentibus. Capitula 
pedunculata, terminalia, solitaria vel ramorum apices versus pauca, 5-6 cm. 
diametro ; pedunculus bracteis foliaceis parvis instructus, 3~5 em. longus. 
Involucri bracteae numerosae, lineares, subacutae, 1-1°2 cm. longae, dense 
lanato-tomentosae, apice glabrescentes. Flores radit usque ad 50, purpurei. 
Corollae tubus cylindricus, 4 mm. longus, minute puberulus; limbus 
lineari-oblanceolatus, apice tridentatus, ad 2 cm. longus, superne minute 
puberulus. Flores disci fusco-purpurei. Corollae tubus inferne cylindri- 
cus, puberulus, superne subcampanulatus, glaber, 4°5 mm. longus; lobi 
lanceolati, subacuti, 1:5 mm. longi. Antherae 2°5 mm. longae. Stylus 
glaber; rami subacuti. Achaenia linearia, 0°5 cm. longa, sulcata, minute 
glanduloso-pubescentia. Pappus setosus, 6 mm. longus, barbellatus.— 
Eurybia semidentata, F. Muell. Veg. Chath. Is. p. 21.—J. Hurcuinson. 
The material for the figure now given of Olearia 
semidentata, Dene, was supplied for the purpose from the 
gardens of Mr. T. A. Dorrien Smith at Tresco Abbey, 
Isles of Scilly, where a plant flowered in July 1913. The 
specimens were sent at the request of Captain A. A. 
Dorrien Smith, by whom it had been brought from the 
Chatham Islands to those of Scilly. The most nearly 
allied species is O. chathamica, T. Kirk, already figured at 
t. 8420 of this work. The two species grow in association 
in boggy places in the Chatham Islands. Captain 
_Dorrien Smith records the existence in its native habitat 
of two colour varieties of the present species, one with 
Aprin, 1914, 
