1958] 



THE BOTANY OF THE GUAYAXA HIGHLAND PART III 



83 



and the thin recurved margin of the hypanthium bears small irregular lobes as 

 in Marlierea. 



Of the collections cited above, the type is considerably less pubescent than the 

 other two, and its leaves are relatively broader, and somewhat less firmly cori- 

 aceous. The differences between these plants, in my opinion, are not greater than 

 those which might be found in ecotypes of the same species. 



22. Marlierea cuprea Amshoff, Bull. Torrey Club 75: 530. 1948. 



For description see Amshoff, I.e. Known only from British Guiana (Essequi- 

 bo and Mazaruni Rivers). 



23. Marlierea ferruginea (Poir.) McVaugh, comb. nov. 



Eugenia ferruginea Poir. in Lam. Encyc. Suppl. 3: 12-1. 1813. 

 Krugia ferruginea (Poir.) Urb. Bot. Jahrb. 19: 604. 1895. 



For description see Urban, I.e., or Amshoff, Fl. Surin. 3: 68 (1951). St. Vin- 

 cent and Trinidad to the Guianas, the type perhaps from French Guiana or the 

 Antilles. 



VENEZUELA: Amazonas: Cerro Sipapo (Paraque), elevation 600-900 m, montane forest, 

 Dec 1-3, 1948, Maguire 4- Politi 27487 (MICH). Bolivar: Ptari-tepui, elevation 1220 m, dense 

 forest, Nov 27, 1944, Steyermarlc 60625 (F, NY). 



There seems to be little justification for the maintenance of the monotypic 

 genus Krugia. The only character of the genus resides in the corolla, in which 

 the petals are adherent to the calyptra and break free from the flower with it. 

 Petals are weakly adherent to the calyptriform segment of the calyx in most if 

 not all the species of Marlierea that have a calyx opening in this way, and one 

 or more petals may fall with the calyptra and remain attached to it. The degree 

 of coherence among the petals is unusually great in .1/. ferruginea, but this is 

 hardly sufficient to serve as a generic distinction. In other respects, including 

 the morphology of the inflorescence, this is a typical Marlierea except that the 

 hypanthium does not split deeply as the fruit develops, but remains nearly entire 

 and tubular. The calyx in M. ferruginea, with its 2 interior and 2 or 3 exterior 

 lobes, is suggestive of that in the newly described M. summa. This species is 

 rather readily recognized, even in fruit, by the combination of abundant rufous 

 pubescence and persistent broadly deltoid-ovate bracts (3-4 mm long) in the 

 inflorescence. 



24. Marlierea gleasoni McVaugh, sp. nov. 



Arbor 9 m alt a, gemmis ramulisque novellis strigosis vel hirsutis, pilis crassis 

 sordidis usque ad 1 mm longis obsitis; corolla calyceque intus creberrime pilis 

 minusculis conicis obtectis; ramulis exalatis; foliis 9-12.5 cm longis, 2.5-plo 

 longioribus quam latioribus, acuminatis ; nervo medio impresso ; venis utroque 

 latere 8-10 ; petiolis 7-10 mm longis, basin versus rimosis ; paniculis 4-10 cm 

 longis, puberulis, inaequaliter ramosis, ramulis lateralibus brevibus, bracteis mox 

 deeiduis; alabastris 2.5-3.5 mm longis extus glabris, lobis distinctis. 



"Slender tree, 30 feet" (Gleason), the vegetative buds and youngest branch- 

 lets strigose to hirsute with coarse sordid acute mostly simple hairs to 1 mm long ; 

 midvein on lower leaf-surface at first closely appressed-strigose with similar, 

 evanescent, hairs 1-1.5 mm long; inflorescence puberulent with pale straight or 

 crisped hairs which are markedly shorter and fewer than those of the axillary 

 shoots from which the panicles arise; petals and calyx-lobes thickly ana uni- 

 formly pubescent within with minuscule erect broad-based hairs ; leaves elliptic- 

 obovate, 3.5-5 cm wide, 9-12.5 cm long, mostly 2.5-2.7 times as long as wide. 



