THE PHANEROGAMS OF -THE JUAN FERNANDEZ ISLANDS 113 



microcephalus. Hkmsley was of the opinion that this hardly differs from Dom- 

 beyanus. The main difference lies in the size of the head. FuENTES, Revis. 

 Fl. Chil. June. 27 speaks of transitional forms between the two among the 

 material from Juan Fernandez. I do not think typical microcephalus has been 

 collected in the islands. 



Area of distribution: Peru; Chile; Masatierra; Uruguay. 



*3& J. plahifolius R. Br. 



Masatierra: V. Colonial, small stream at the foot of the chapel hill (past 

 fl. 22 /i2 16, no. 185). 



Probably of recent introduction, perhaps with water-birds occasionally 

 visiting Juan Fernandez; belongs to genuinus Buch., a broad-leaved form of this 

 with sheath to 12 and blade to 9 mm wide. 



Area of distribution: Australia; Tasmania; New Zealand; South Chile; 

 Masatierra. 



Iridaceae. 



Libertia Spreng. 



37. L. formosa Grah. — Syn.: var. grandiflora (Phil.), Johow, Estud. 150. 

 Masatierra: barren slopes and rocky ridges, not uncommon. — Co Dama- 

 juana, on the north side, c. 500 m; V. Colonial, common from 200 m to Porte- 

 zuelo (beg. fl. 3 /i2 16, no. 13), more local at a lower altitude; C. Central, 

 c. 570 m; Q. Seca, c. 400 m; C. Salsipuedes, frequent; Villagra; B. Chupones. 

 Masafuera: on the cliffs near the sea and also in the canyons, common; 

 here and there in the alpine region. — Q. del Pasto; Q. de las Casas; Q. del 

 las Vacas (fr. 13 /-2 17, no. 427); Q. Angosta; Q. del Varadero; Tierras Blancas; 

 Q. de la Loberia (also in the open forest); scattered in the highlands; greatest 

 altitude observed, c. 1400 m. 



Philippi argued that his L. grandiflora differed from formosa in the denser 

 fascicles and the much larger flowers, and in the not cordate or refuse petals. 

 I cannot find any difference between them. The flowers of the island plant 

 are about 22 mm across, the sepals 8 mm long, the petals 16,5 X 14 mm, but 

 smaller in many cases, the filaments 8 — 8,6 mm, their tube about 2,5 mm long, 

 the anthers 3 mm. In most cases I found the petals distinctly emarginate and 

 with a broad rounded, sometimes subcordate base. Plants grown from seeds, 

 collected in the islands, have smaller flowers than the largest wild ones, but 

 are otherwise quite typical. 



L. formosa is very near L. elegans Poepp. Cultivated specimens of the 

 latter flowered at the same time in the Gothenburg Garden; the most notable 

 difference lies in the sepals, which are white, almost translucent at the base 

 and crowned by a long, convolute, brown apex, while they are green, more or 

 less pale at the base, obtusate and without acumen in L. formosa. The petals 

 are not emarginate in elegans, the filaments measure 10 and the anthers 4 mm. 

 The pollen is dark yellow in this, but sulphureous in formosa. 

 Area of distribution: South Chile; Juan Fernandez. 



8 — 20100. The Nat. Hist, of Juan Fernandez and Easter Isl. Vol. II. 



