24 FLORA ANTARCTICA. [Auckland and 



tato, sub-bilabiato, dentibus obtusis, 1 reliquis sub-duplo longioribus. Stylus incrassatus, cylindraceus, exsertus, 

 basi bulbosus, bifidus, ramis ovato-oblongis obtusis marginibus apiceque stigmatiferis. Achcenium calvum, late 

 obovatum, apice retusum, extus planiusculum, intus carinatum, carina marginibusque celluloso-incrassatis. — 

 Fl. Masc. Corolla tubulosa, clavata, subtetragona, angulis incrassatis linea elevata cellulosis, 4-dentata, dentibus 

 acutis erectis sequalibus. Stamina 4 ; filamentis ima basi corolla insertis, angulis incrassatis alternantibus ; an- 

 theris vix ac ne vix liberis, basi breviter productis. Stylus exsertus, basi (ut in fl. fcem.) bulboso-incrassatus, 

 apice capitato truncato obscure bilobo. Achcenium parvum, vacuum. — Herba repens laxe ccespitosa, ramosa, gla- 

 berrima, ad terrain niontibus insularum Auckland et Campbell obvia. Folia alterna. Capitula inconspicua in ramis 

 ultimis, primum inter folia sessilia, demum pedunculis propriis ultra folia productis apice foliiferis elevata. Flores 

 fusco-purpurascentes. Folia spathulata v. lineuri-spathulata elongata. 



1. Trineuron spalhulatum, Hook. fil. (Tab. XVII.) 



Hab. Lord Auckland's group and Campbell's Island ; on peaty soil, near the summits of the 

 mountains, alt. 1200-1400 feet. 



Caulis breviusculus, 1-2 unc. longus, sublignosus, repens, fibras copiosas validas elongatas per totam lon- 

 gitudinem emittens, et reliquiis foliorum vetustorum undique tectus, superne parce ramosus ; ramis brevibus 

 ascendentibus erectisve foliosis ultra folia in pedunculum nudum apice floriferum productis. Folia basi imbri- 

 cata, undique patentia, lineari-spathulata, glaberrima, integerrima, plus minusve elongata, ^-1 unc. longa, ob- 

 tusa, 3-5-nervia, plana, subcarnosa, laete viridia. Capitula parva, subsolitaria, vel 3-4 aggregata, juniora valde 

 inconspicua, inter folia occulta, demum pedunculata ; pedunculo \-\ unc. longo, apice folioso, foliis 2-3 reliquis 

 longioribus. Flores minimi, vix ^ lin. longi, sub lente pulcbre rubro-purpurei. 



A very remarkable genus, most nearly allied to Abrotanella, Cass. (Oligosporus emarginatus, Gaud, in Ann. 

 Sc. Nat. vol. v. p. 104. t. 3. fig. 4), but of a very different babit, and in many other particulars quite distinct, 

 especially in the more numerous scales of the involucre, inserted in two series, in the many-flowered capitula, 

 the quadrifid corollas of the ray, the curious tetragonous corollas of the disc, and the thickened cellular structure 

 which exists in several parts of this plant. Besides the achsenia having a thickened border and keel in front, 

 formed of large lax transparent cells, the incrassated angles of the male flowers and the three nerves of the 

 involucral leaves, exhibit the same singular character. In both the latter cases, the substance of the organs 

 themselves, which are opake and fleshy, seems to be divided by broad lines of a transparent substance, marked 

 with transverse septa. 



Many of the discoid Senecionidea, and especially in the tribe Hippice of Lessing, are remarkable for the 

 curious and anomalous structure of their inflorescence. In several instances, as in the present, it may be 

 doubted whether the flowers of the ray are really tubular, the general unequal division and oblique aperture 

 of the mouth appearing to indicate their true structure as either ligulate or 2-lipped ; 2-lipped perhaps in the 

 present and the following genus, and assuredly 1-lipped or ligulate in Abrotanella, where I observe the three teeth 

 all to point towards one side of the tube, with the middle one the longest. The teeth in this species have the 

 margins thickened, and apparently revolute. The base of the style is peculiarly incrassated, especially in the 

 female flower, having the base of the corolla swollen around it, and the thickened portion often forms a 

 depressed sphere, in which the style seems to be inserted, and it sometimes assumes the appearance of a fleshy 

 ring or corona, surmounting the top of the ovary. 



The name is adopted in allusion to the three cellular nerves or lines of the ovary and involucral scales. 



Plate XVII. Fig. 1 , capitulum ; fig. 2, scale of the involucrum ; fig. 3, side view, and fig. 4, front view of 

 flowers of the ray ; fig. 5, back, and fig. 6, front view of ripe achsenium ; fig. 7, style of a flower of the ray, with 

 its bulbous base ; fig. 8, flower of the disc ; fig. 9, stamen, and fig. 10, style from the same :— all magnified. 



