THE PHANEROGAMS OF THE JUAN FERNANDEZ ISLANDS 



'43 



Rutaceae. 

 Fagara L. 



70. F. mayu (Bert., Hook, et Arn.) Engler. — Johow, Estud. 105. — 

 Fig. 14 a— d. 



Masatierra: The largest forest tree and one of the commonest, ranging 

 from Pto Frances to Q. Juanango and Co Chumacera and from about 200 m 

 (or less) to more than 600 m (unr. fr. Dec. 1916, no. 194'; buds 11 U 17, no. 617; 

 male fl. 18 / 8 17, no. 617 b, leg. K. Backstrom). 



Fig. 14. a— d Fagara mayu: a <f flower with gynaeceum, b <j> flower (one petal removed) 



with staminode, c 9 in fruit, lateral and apical view, and one carpel, all X 5 ; d three leaflets, 



the central from the lower surface; e F. externa, two leaflets, d— e nat. size. 



Leaves to 16 cm long, 3—7 paired; leaflets 25— 43 X 11— 13 mm, ellipt- 

 ical — lanceolate, faintly or not acuminate, base cuneate, short petiolate; glands 

 between the marginal teeth distinct but otherwise few or at least few pellucid 

 ones. Margin of leaflet forming a regular arch ; the teeth only 7 to 9 on each 

 side and mostly all of the same width. 



Area of distribution: Endemic in Masatierra. 



*7i. F. externa nov. spec. — Fig. 14 e. 

 , A F. mayu insulae Masatierrae incola praecipue differt foliorum fabrica. 

 Folia ad 19 cm longa, 5 — 8 paria; foliola subsessilia, ovato-elliptica, basi late 

 rotundata, sat longe et distincte acuminata, 25 — 48x13 — IS mm, margine 

 dentibus inaequalibus utroque latere ad 20 vel ultra sat irregulariter undulato- 

 serrata, punctis pellucidis creberrimis conspersa. Planta foeminea fructifera 

 solum lecta. Fructus maturus irregulariter tuberculato-rugosus; carpella omnia 

 quinque saepe fertilia. Semina subglobosa, nitida, atropurpurea. 



