1953] 



BOTANY OF THE GUAYANA HIGHLAND 



143 



Clidemia neglecta D. Don. 



Shrub or small tree, infrequent along a water course at Intermediate Camp on 

 Cerro Sip apo, altitude 540 m., Maguire & Politi 28746; British Honduras to Panama 

 and through tropical South America to southern Brazil. 



Clidemia rubra (Aubl.) Mart. 



Subshrub to 1 m tall, petals white or pale pink, stamens purple, grassy places 

 in sandy soil under iviauripa, Monagas, Maguire, Kunhardt & Politi 27301; sub- 

 shrub to 4 dm. tall, San Antonio-Cumana Road pass, State of Monagas, Maguire, 

 Kunhardt & Politi 27253; common, Vera Cruz to southern Brazil and Bolivia. 



Henriettella heteroneura Gl., sp. no v. 



Frutex cauliflorus; folia anguste elliptica vel oblanceolata, 5-pli-nervia, ad 

 basim angustata in petiolum alatum fere ad caulem; flores 4-meri sessiles; hy- 

 panthium tenuissime furfuraceum; sepala late triangularia; petala triangularia 

 acuta. 



Shrub, the younger branches glabrous, obscurely 4-angled. Leaves glabrous, 

 narrowly elliptic to oblanceolate, up to 14 cm. long and 5 cm. wide, slenderly 

 acuminate, entire, decurrent at base into a winged petiole about 3.5 cm. long, 

 5-pli-nerved, the outer pair marginal. Flowers 4-merous, sessile in dense few- 

 flowered clusters below the leaves. Hypanthium cup-shaped, 1.7 mm. long to the 

 torus, thin-walled, obscurely ribbed within, very thinly but completely furfur- 

 aceous or sublepidote. Calyx-tube scarcely prolonged; sepals very broadly tri- 

 angular, about 0.5 mm. long from the torus, merely thickened on the back at the 

 tip. Petals triangular, acute from a broad base, 2.4 mm. long, white. Stamens 

 8, weakly dimorphic; filaments slender, glabrous, 2.8 mm. long; small anthers 

 stoutly oblong, blunt, 1.7 mm. long, the connective raised down the back into 

 a prominent ridge but truncate at base; large anthers similar, 2.2 mm. long; 

 connective similar but prolonged at base into two short dorsal lobes and two 

 minute lateral lobes. Ovary inferior, much depressed or discoid; style straight, 

 slender, glabrous, 4.4 mm. long to the truncate stigma. 



TYPE: from Carlo Profundo, summit of Cerro Sipapo, Bassett Maguire & Louis 

 Politi 28293; New York Botanical Garden. The specific name has been chosen to 

 avoid the necessity of a transfer if future investigation proves that the plant 

 is conspecific with Clidemia heteroneura, a species at present unknown to us. 



Henriettella !ongistyla Ule. 

 Henriettella micrantha Gl. 



Small tree along Rio Cunucunuma, below north slopes of Cerro Duida, infre- 

 quent, Maguire & Maguire 2904 6; Rio Branco to southern Colombia, at low 

 altitudes. 



Loreya minor Cogn. 



Large tree with red flowers, Base Camp, Rio Cuao, alt. 140 m., Maguire & 

 Politi 28164; an Amazonian species. 



Loreya mucronata Gl., sp. no v. 



Arbor parva, ramis dense strigillosis; petioli elongati; laminae elliptico- 

 ovatae, obtusae, mucronatae, ciliatae, ad basim obtusae vel rotundatae, supra 

 glabrae, subtus ad nervos strigillosae, ad p agin am sparsissime strigillosae, 3-pli- 

 nerviae, jugo marginali neglecto; flores solitarii, subsessiles, 6-meri, infra folia 

 orientes; staminum connectivum carinatum sursum rotundatum. 



Small tree, the younger stems 4-angled, very densely strigillose. Petioles 

 2.5-3 cm. long, strigillose like the stem. Blades thin, elliptic-ovate, up to 2 

 dm. long by half as wide, obtuse but with a short subulate apiculum from the pro- 



