196 CARL SKOTTSBERG 



latum, calyculo conspicuo e bracteis 5—6 (vel ultra) ad 4 mm longis formato. 

 Squamae ad 14, ut in J\ sed magis adpressae et conspicue longiores. Flores 

 ligulati 8, flavi, 8 mm longi, ligula 2,2 — 2,5 mm longa et 1,5 — 2 mm lata, sub- 

 tridentata; stylus exsertus ramis patentibus. Flores disci viridescentes, 6 mm 

 longi, staminodiis minutis, stylo exserto ut in praecedente. Achaenia fusiformia, 

 fusca, 9 — io-costata, c. 2,2 mm longa; pappus setis circ. 25 basi annulum minutum 

 formantibus. 



Masafuera: On the high ridges, generally growing in the fernbeds, often 

 much damaged by the goats, which had killed a great many specimens. — 

 Edge of western precipice, above Buque Varado, c. 1250 m; near the Corre- 

 spondencia camp, 1130 m (fl.-past fl. lo 2 17, no. 434 &, no. 1233 cT); Las Torres, 

 1370 m, rare; C. Atravesado, 1350 m, one small tree; C. del Barril, c. 750 m; 

 Los Inocentes, 740 — 950 m, among Dicksonia, also seen growing on the trunk 

 of this; slopes of 0. Varadero, c. 650 m. One aberrant sterile plant was observed 

 in Q. de las Chozas in dense forest, with long, thin leaves (no. 374); one 

 seedling was found in the Casas canyon. 



Of special interest as the first Robinsonia reported from Masafuera. It is 

 very near R. evenia, but as a rule not epiphytic and differing in many respects. 

 The leaves (fig. 34) have a broader midrib and are more narrowed towards the 

 base, the base is less inciassate and the scars left linear, not triangular or 

 semilunar as in evenia. The female head is a trifle smaller and has a more 

 conspicuous calyculus. The details of the flowers show some differences, as 

 seen from my illustrations. 



Area of distribution: Endemic in Masafuera. 



130. R. gracilis Dene. — Johow, Estud. 61. — Fig. 33 t— x, 35 h. 



Masatierra: In the shrubberies of the ridges, not seen at a lower altitude 

 than 530 m, scarce. Between Q. de la Piedra Agujereada and O. Laura, robust 

 specimens; C. Centinela (also observed by Johow), 530 m, forming small 

 thickets and exceptionally well developed (fr. 28 /3 17, no. 577); crest of the 

 island above Pangal, c. 800 m, very scarce; V. Colonial, C. Central, c. 570 m, 

 solitary; Portezuelo de Villagra, one o 7 plant near the SELKIRK memorial (buds 

 3 /i2, beg. fl. u /i2 16, no. 24), and a few $ plants, one of which grew on Blech- 

 uum cycadifolium (fl. 25 /i2 16, no. 195), C. Salsipuedes, 730 — 750 m, solitary 

 (beg. fl. 7i2 16, no. 78 cT, 81 ?). 



Johow writes 1. c. »lfgulas numerosas i mucho mas largas que en las demas 

 especies;*. Hemslev's figure of a male plant shows 8— 10 ligules (pi. 55). My 

 observations, made on abundant living material, are not in accordance with 

 Johow's statements. 



Inflorescence comparatively small, only containing 20—25 heads. Caly- 

 culus of few, minute bracts. Involucre 4 mm high and 4 mm across, little 

 exceeded by the florets, of about 12 scales, firmly pressed together in £, much 

 less so in ^. The male head is 7S mm across, the ray florets generally 8, 

 bright yellow, 5 mm long; ligules 2,5 X 2 mm, 2 — 3-dentate. Style slightly 

 bifid with erect branches. Disc florets yellow, 4 mm long, style deeply bifid 

 with truncate branches, hardly reaching the full length of the stamens. 



