THE PHANKROGAMS OF THE JUAN FERNANDEZ ISLANDS 



173 



Very like C. folio sum A. Gray from Oahu (Hawaii), which differs in the 

 narrower leaves and in the shape of corolla and stamens. 

 Area of distribution: Endemic in Masatierra. 



109. C. pyrifolium (Hook, et Am.) Skottsb. - Syn. Psychotria pyri- 



folia Hook, et Arn, JOHOW, Estud. 74. — Fig. 24 d. 



Masatierra: An important forest tree, extending over the entire wooded 

 region from Pto Frances to Co Chumacera and ranging from 200 m, or perhaps 

 less, to 650 m at least. We did not find flowering specimens (sterile, l8 /i2 16, 

 no. 161, 20 /ia 16, no. 1222, 18 /i I/, no. 308); but ripe fruits were gathered 9 j\ 17, 

 no. 600. 



Masafuera: Scattered through the forested region; lowest altitude observed 

 280 m (fr. 17 /2 17, no. 435); not uncommon up to 950 m. One small tree was 





Fig. 24. a— -c Coprosma trifloritm, a male, b apparently bisexual, c teniale flower; d C. pyri- 



folium, male flower. All X 3- 



found in the alpine fern-beds, c. 1200 m, not far from the Correspondencia 

 Camp (fl. o 7 * 5 /3 17, no. 501); also in some of the deep gorges, by the stream, 

 not much above sea level, f. i. in Q. de las Casas (past fl. $ n /s 17, no. 499). - 

 Specimens from open and sunny stations (nos. 499 and 501) differ from others 

 by the firmer, bright green leaves. 



The removal of Psychotria pyrifolia to Coprosma is quite welcome from a 

 geographical point of view. BERTERO 1. c. suggested that it was a mere form 

 of his Hippotis; Hooker and ARNOTT, 1. c. 360, called it Psychotria?, while 

 HEMSLEY and JoHOW dropped the question mark. It is dioecious and the 

 structure of the flower is the same as in C. triflorum; accordingly, it differs 

 widely from Psychotria. The male flower has not been described before; it is 

 brownish green with yellow anthers. The corolla measures 8 — 9 mm and is 

 deeply cleft with linear, acute, reflexed lobes; the stamens are inserted at the 

 base of the corolla tube; the filaments measure 8 — 9, the anthers 5 — 6 mm. 



C. pyrifolium, sometimes rather like the preceding, is a much larger tree 

 with thinner and broader, more pyriform leaves, indistinctly serrulate in the 

 upper half and with narrower meshes in the net of venules. As was pointed 



