1958] 



THE BOTANY OF THE GUAYAXA HIGHLAND PART III 



7!' 



This species, unfortunately not known in flowering or fruiting condition, ap- 

 pears to be related to C. macrophylla, C. speciosa, and C. longifolia, all species 

 in which the stout and congested inflorescence is somewhat persistently bracteate, 

 and in which the dioecious condition is frequent. The present species closely 

 resembles C. ynacrophylla, but the leaves are smaller and less abundantly pubes- 

 cent beneath, the midvein is not impressed above, the pubescence of the inflores- 

 cence is more copious and of longer hairs. 



14. Calyptranthes speciosa Sagot, Ann. Sci. Xat. Ser. VI. 20: 187. 1885. var. 



speciosa. 



For description see Amshoff, Fl. Sunn. 3: 61 (1951). In the region from east- 

 ern Colombia to northeastern Peru this species is represented by C. speciosa var. 

 gigantifolia (McVaugh) McVaugh, comb. nov. (C. giganfifolia McVaugh, Fieldi- 

 ana Bot. 29: 181. 1956). Var. speciosa is known from relatively low-lying areas in 

 Suriname and French Guiana, the type from the French side of the Marowijne 

 [Maroni] River. 



15. Calyptranthes spicata Amshoff, Rec. Trav. Bot. Neerl. 39: 148. 1942. 

 Suriname ; known only from the type. For description see Fl. Surin. 3: 



60 (1951). 



16. Calyptranthes spruceana Berg in Mart. Fl. Bras. 14 1 : 45. 1857. 



For description see Berg, I.e. Known only from the type-collection. Spruce 

 1551, found near the junction of the Rio Xegro with the Rio Solimoes. 



Marlierea Camb. in St.-Hil. Fl. Bras. Merid. 2: 373 (folio ed. 269). pi. 156. 1829. 



17. Marlierea bipennis (Berg) McVaugh, comb. nov. 



Myrciaria bipennis Berg, Linnaea 31: 259. ?1862. 



Myrcia bipennis (Berg) McVaugh, Fieldiana Bot. 29: 189. 1956. 



Up to 2.5-3 m high ; leaves elliptic to lanceolate or ovate, 3-5 cm wide, 7-15 

 cm long, (2-) 2.5-3.5 times as long as wide, narrowed from the middle or below 

 to the apex, rounded or acute at the base, the margins cuneately decurrent on 

 the channeled petiole 1—1.5 mm thick, the petiole keeled or angled on the back 

 at least in young leaves; midvein impressed as a narrow closed furrow; mar- 

 ginal vein 1 (-2) mm from the margin; upper leaf-surface obscurely puncticu- 

 late or the glands scarcely apparent ; paired panicles up to 3 cm long, 5- to 9- 

 flowered ; flow T ers not seen ; stamens probably 75-100 ; fruit 8-10 mm in diameter, 

 lustrous blue-black. 



BRAZIL: on the Rio Negro, Spruce 3770, type. Amazonas: Caehoeira Caranguejo Rio 

 Cauabury, E. G. Holt 4- E. R. Blake 551, Dec 16, 1930 (NY) ; Ilha de Jerusalem, Rio Xegro, 

 near mouth of Rio Cauabury, Holt 4- Blake 556, Dec 18, 1930 (NY). VENEZUELA: Ama- 

 zonas: Solano, Bajo Casiquiare, elevation 100 m, March 12, 1942, L. Williams 14763 (F). 



This species is here designated as the type of the following distinctive sec- 

 tion; the other members of this section are M. guildingiana, M. Jcaruaiensis, and 

 M. maguirei, which are described below in their proper alphabetical sequence. 

 The descriptions provided for these species, and for M. bipennis, are abridged 

 because a full description of the section is provided. 



Marlierea sect. Myrcioides McVaugh, sect. nov. 



Frutices vel arbores parvae, ramulis junioribus bialatis vel bicarinatis ; f oliis 

 demum glabris, supra plerumque impresso-punctatis ; paniculis geminatis, pau- 

 cifloris, plerumque glabris ; calycis lobis in alabastro parvis, in fructu inter se 



