152 THE VOYAGE OF H.M.S. CHALLENGER. 



Cotula moseleyi, n. sp. (Plate XXVII.) 



Glabra, subcarnosa, habitu Senecionis vulgaris foliis bipinnatisectis, capitulis breviter 

 pedunculatis, acheniis Isevibus. 



Herba annua (?) erecta, 5-8 poll, alta, ramosa. Folia sessilia, semiamplexicaulia, seg- 

 ments ano-ustis acutis. Capitula folia vix superantia, 3-4 lineas diametro ; involucri 

 bracteae biseriatse, ovato-oblougse, obtusse vel rotundatse, margine scariosse et sublaceratse ; 

 receptaculum concavum, foveolatum. Flores dimorpbi, pauci exteriores $ pedicellati, 

 corollis nullis ; interiores sessiles, corollis cylindraceis. Achenia compressa, laevia, glabra, 

 marp-inata. 



Nightingale Island. — Endemic. Abundant — Moseley. 



This species is near Cotula anthemoides and Cotula australis, differing from the 

 former in its larger flower heads and shorter peduncles, and from the latter in its smooth 

 achenes. It is a more robust plant, with thick, somewhat fleshy stems, like common 

 groundsel. 



Hypochseris glabra, Linn. 



Hypocharis glabra, Linn. ; DC, Prodr., vii. p. 90 ; Benth., Fl. Austr., iii. p. G77. 



Tristan da Cunha. — Introduced ? Moseley. 



This species is now widely dispersed in the southern as well as the northern hemi- 

 sphere, and it is regarded by Mr Bentham as indigenous in Australia, where it is common 

 without the tropic. Nevertheless, it is almost certainly a recently introduced plant in 

 Tristan da Cunha, for no previous traveller has recorded it from the island. 



Sonchus oleraceus, Linn. 



Sonchus oleraceus, Linn. ; Hook, f., Handb. Fl. N. Zeal., p. 1G6; Benth., FL Austr., iii. p. 679. 



Tristan da Cunha. — Introduced 1 Common on the plain — Carmichael. Inaccessiele 

 Island. Moseley. 



The remarks under Hypochceris glabra apply equally to this species, which is now 

 almost universally diffused except in the colder regions. Mr Bentham suggests that it 

 may be truly indigenous in Australia ; and Sir Joseph Hooker states (Handb. Fl. N. Zeal., 

 p. 166) that his var. /S (Sonchus asper, Fuchs) is certainly indigenous in New Zealand, 

 having been found by Banks and Solander and Forster, and at Chalky Bay by Lyall, 

 and in the interior of the Northern Island by Colenso, who says that it was formerly 

 eaten by the natives. 



