28 REPORT ON TWO BOTANICAL COLLECTIONS FROM 



as shown in figs. 6-7, but I cannot consider this vai-iation of sufficient importance to 

 separate the two specifically. 



Allied to Macairea ihyrsiflom, DC, and 31. albiflora, Cogn. ; differing in the very 

 much rougher upper surface and different indumentum of the lower surface of the leaves 

 and in the stouter anthers. M. albiflora, Cogn., according to Spruce's label, has purple 

 flowers, not white as described by Cogniaux. 



Macairea pachyphylla, Benth. in Hook. Journ. Bot. ii. (1840), p. 292 ; B. Schomb. 



Beisen in Brit. -Guiana, iii. pp. 1100, 1192 ; Cogn. in DC. Monog. Phan. vii. 



p. 178. 

 Kotinga Valley, McDonnell 8f Quelch, 181. — Apparently endemic to the vicinity 

 of Boraima. 



TiBOiCHiNA fraterna, N. E. Brown, sp. n. Folia anguste elliptica, utrinque nequaliter 



subacuta, 3-nervia, subtus appresse squamosa, supra striolata, et marginibus et 



secundum lineas duas inter nervos squamosa. Bracteie libera?, oblonga?, obtusse. 



Calyx appresse squamosus, 5-lobus, tubo cylindrico quam lobis longiore. Petala 



elliptico-obovata, unguiculata, glanduloso-ciliata. 



Branchlets densely clothed with imbricating, lanceolate, acuminate, brownish scales 



about A lin. long, those at the nodes about twice as long and more acuminate. Leaves 



spreading; petiole 1-1^ lin. long, scaly; blade ^-1 in. long, 1-6 lin. broad, narrowly 



elliptic, about equally acute or suhacute at both ends, apiculate, 3-nerved, the underside 



clothed with adpressed acuminate scales, those on the nerves much larger than the rest, 



the upper surface finely striate, with a longitudinal row of minute scales near each of the 



lateral nerves and along the margins. Cymules 2-3-flowered, subsessile or with peduncles 



up to 3i lin. long, axillary and terminal, forming a terminal inflorescence 1-2 in. long, 1 in. 



broad, clothed to the tips of the calyx-lobes with pale, rosy-tinted acuminate scales. Bracts 



free, 2-4 lin. long, about 1J lin. broad, oblong, obtuse, resembling reduced leaves; bracteoles 



smaller, thinner, more glabrous, free, ciliate with long hair-like scales. Pedicels very short, 



scarcely 1 lin. long. Calyx-tube 3 lin. long and about li lin. diam., cylindric-campanu- 



late ; lobes 2 lin. long, 1\ lin. broad at the base, whence they gradually taper in a nearly 



straight line to an acute point, erect or very slightly spreading, glabrous inside, ciluite. 



Petals 7 lin. long, 3f. lin. broad, elliptic-obovate, very obtuse, clawed, minutely ciliate 



with gland-tipped hairs, and with a few long simple hairs at the apex, otherwise glabrous. 



Stamens 10, unequal, glabrous ; the longer anthers 5 lin. long, the shorter 4 lin. long, all 



attenuate to a subulate point, opening by one terminal pore; connective bifid at its 



insertion on the filament. Ovary free, oblong, densely covered with hair-like scales ; 



style slender, glabrous. 



Upper slopes of Mount Boraima, McConnell fy Quelch, 17. 



A very distinct species, which, according to the arrangement of Cogniaux, I think 

 should be placed in the section Lepidotce, although it bears very little resemblance to the 

 only two species [T. lepidota, Baill., and T. paleacea, Cogn.) at present placed under that 

 section. It has much more resemblance to T. Spniceana, Cogn., and T. aspera, Aubl., 



