. The phanerogams of the Juan Fernandez Islands. Botany. THE PHANEROGAMS OF THE JUAN FERNARDEZ ISLANDS 195 Male plant: Head 8 mm high, 10 — 12, rarely as much as 15 mm across. Involucre of about 13 scales, 6—7 X 4—4,5 mm, campanulate, with 5 or 6 small calycular bracts. Ray florets 8, pure yellow, 8—10 mm long; ligule tridentate, 3,2—4X 2,5 mm; style hardly exserted, bifid; pappus rays numerous (25—30) in all kinds of flowers. Disc florets greenish yellow, 6 — j mm long; style deeply bifid with truncate branches. Female plant: Head about 10 mm high, 7—8 across; involucre cylindrical, 7—8 X S m
. The phanerogams of the Juan Fernandez Islands. Botany. THE PHANEROGAMS OF THE JUAN FERNARDEZ ISLANDS 195 Male plant: Head 8 mm high, 10 — 12, rarely as much as 15 mm across. Involucre of about 13 scales, 6—7 X 4—4,5 mm, campanulate, with 5 or 6 small calycular bracts. Ray florets 8, pure yellow, 8—10 mm long; ligule tridentate, 3,2—4X 2,5 mm; style hardly exserted, bifid; pappus rays numerous (25—30) in all kinds of flowers. Disc florets greenish yellow, 6 — j mm long; style deeply bifid with truncate branches. Female plant: Head about 10 mm high, 7—8 across; involucre cylindrical, 7—8 X S mm; ray florets 8, yellow, 7—8 mm long; ligule 2,5 X 2 mm; style greenish, deeply bifid; disc florets 6 mm long, yellow with greenish, barely exserted style. Young achenes slightly costate with pilose costae. Area of distribution: Endemic in *I29. R. Masafuerae nov. spec. — Plate 17, fig i; text fig. 33 p—s, 34 a, 35 c, k, i. Arbuscula dioeca ad 2 m alta, trunco primario certe ad 7 cm crasso, pseudo- dichotome-subumbellatim ramosa, ramis junioribus viridibus, cicatricibus lineari- bus foliorum manifeste notatis. Folia ad apicem ramorum more generis conferta, cras- , dilute viridia, glaberrima, lanceolata—anguste obovato-lanceolata, in apicem acutum sensim angustata, versus basin valde contracta, margine in parte dimidia superiore minute denticulata, nervo mediano utrinque conspicuo, basi latissimo, secun- dariis indistinctis, angulo acuto exeuntibus, plerumque 7—12 cm longa et 1,5—2 cm lata, sed magnitudo summopere variabilis (folia ad 18,3 X 4,7 cm visa, in specimine sylvicola unico invento ad 22 X 3,5 cm). Inflorescentia terminalis valde ramosa corymbosa, bracteis sat parvis instructa; pedicelli capitulorum 1—2 cm longi, superne pilosi. Capitula J1 7 mm alta et 10 mm crassa; involucrum campanulatum, 5 mm altum et 4 mm latum, addito calyculo a bracteis perpaucis angustis ad 2 mm Longis formato. Squamae circ. 12, 5
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