-4 



MEMOIRS OF THE NEW YORK BOTANICAL GARDEN 



[VOL. 10 



abruptly acuminate, gradually narrowed toward the base from above or near the 

 middle, the -margins at the very base acutely narrowed and decurrent on the 

 thin ventral edges of the deeply channeled petiole 1-2 mm thick, 7-10 mm long; 

 distal portion of the petiole slender, smooth, the proximal portion pale, corky- 

 thickened and rimose ; midvein impressed above, prominent beneath ; lateral veins 

 8-10 pairs, somewhat impressed above ; marginal vein weaker than the laterals, 

 slightly impressed above or scarcely apparent there, consisting- of a series of bold 

 asymmetric loops between the laterals, 2.5-5 mm from the margin ; blades drying 

 with minute surface irregularities, nearly featureless above, the lower surface 

 minutely siliceo-verruculose with inconspicuous dark dots : panicles arising later- 

 ally from the 2 or 3 lowest nodes of new hirsute terminal or axillary branchlets. 

 which if axillary are mostly 1-3 cm long:, 1-2 mm wide, with terminal bud abor- 

 tive ; terminal branchlets sometimes leafy beyond the inflorescence; panicles 4—10 

 cm long-, 8-12-flowered, once or twice compound, with elliptic subtending bract 

 2 mm wide, 6 mm long:; peduncle 2-3 cm long-, 1.5-2 mm wide below the lowest 

 node; flowers clustered near the tips of the branchlets; bracts and bracteoles 

 early deciduous; buds glabrous, obovoid, 2.5-3.5 mm long including a short 

 pseudostalk; calyx-lobes very unequal, the two outer erect, narrow, sometimes 

 linear or lanceolate, 1 mm long; 3 inner lobes broadly rounded, imbricate, usu- 

 ally much wider than long', 1-1.5 mm long-, 1.5-2 mm wide ; hypanthium glabrous, 

 broadly campanulate, after anthesis explanate. with prominent larg-e glandular 

 dots on both surfaces, the splits between the calyx-lobes extending toward the 

 middle through the staminal ring and leaving entire the central area 2-2.5 mm 

 wide; lobes irregularly oblong- or quadrangular, usually 5, to 2 mm wide, 1.5-2.5 

 mm long; style 4 mm long; stamens 60-75, 2.5-3 mm long, the anthers 0.4—0.5 

 mm long; petals 5, very unequal, early deciduous, ciliate, up to 2.5 mm long; 

 ovary bilocular. with 2 ascending ovules in each locule. 



BEITISH GUIANA: Tumatumari, dense upland forest, June 18-July 8, 1921, H. A. 



Gleason 171 (NY, type; K, US), 170 (K, XY, US). 



25. Marlierea guildingiana (Griseb.) Krug & Urban in Urban, Bot. Jahrb. 19: 

 591. 1895. 



Psidium guildingianum Griseb. Fl. Brit. W. Ind. 242. 1860. 



Up to 6 m high ; leaves elliptic or lanceolate. 2.5-6 cm wide, 7.5-22 cm long, 

 about 3 times (2.3-4) as long as wide, the base rounded or acute, the margins 

 somewhat* produced above the base and then abruptly decurrent on the deeply 

 channeled or somewhat margined petiole 1.5-2.5 mm thick; petiole often verru- 

 cose and in age often transversely rimose ; midvein impressed as a broad 

 V-shaped open trough ; marginal vein 1-2 mm from the margin ; upper leaf- 

 surface obscurely puncticulate, or the glands scarcely apparent ; inflorescence 

 bright reddish-crimson (Sandwith). the 1-3 pairs of panicles 2-6 (-8) cm long, 

 each panicle 10-15 (-25 ) -flowered ; hypanthium in anthesis campanulate. pro- 

 longed 1.5-3 mm beyond the summit of the ovary, the orifice 1.5-2.3 mm wide; 

 style 4-5 mm long; petals 4 white with a pinkish tinge (Sandwith), suborbicular, 

 2.5-3.5 nim long and wide; stamens about 50, the longest 3.5 mm long, the 

 anthers 0.5 mm long; fruit 5-9 mm long, 7-12 mm wide. 



St. Vincent, Trinidad, and British Guiana, the type from St. Vincent. This 

 species is a member of sect. Myrciopsis, q.v. above under M. bipennis. 



