COLLECTED BY MR. SPRUCE. 33 



Omphalea. 



Specimens of the 0. diandra, Aubl., a woody climber, were gathered 

 at the junction of the Solimoes and Rio Negro, in May 1851. 



L 



Leptoehachis. 



I have not seen the Z. Tiadata^ upon which Dr. Klotzsch founded 

 this genus, and know not from what part of Brazil he had it ; but a 

 single specimen in fruit of an herbaceous twiner, gathered by Mr. Spruce 

 at Barra do Rio Negro, agrees as far as it goes with the character 

 given. 



AsTROcoccus, gen. nov. Acalypliearum, 



The plant for which I propose this new genus has much of the habit 



as well as the male flowers and the female stigmate of BolryantJie^ and 



I was at first disposed to consider it only as a very marked species of 



that genus; but the female flowers in other respects, and the fruit, are 



too difl'erent to allow of their combination without uniting them also 



with other neighbouring genera admitted to be distinct- 



Cliar, Gen. Astrococcus. Flores apetali, monoici, racemosi, singuli 



bractea sufi^ulti. FL Masc, Calyx globosus, 4-partitus, laciniis aesti- 



vatione valvatis. Stamina 6-8, filamentis brevibus crassis basi in 



discum depressum coalitis, antheris bilocularibus. TL Fcem. Calyx 



4-partitus, laciniis angustis recurvis. Ovarium sessile, depressum, 



trilobum, lobis dorso muricatis, triloculare, ovulis solitariis pendulis. 



Slylm ovoideus, crassus, ovario longior, apice concavus, stigmatibus 3 



brevissimis dentatis. Capmla tricocca, coccis horizontaliter divergen- 



tibus clavatis 2-4-cornutis muricatisque intus bivalvibus. 



Species unica: A. cornutus, Arlor gracilis, 10-12-pedali3, ramulis pu- 



bescentibus. Stipulm minutse setaceae v. nuUae. lolia breviter pe- 



tiolata, oblonga, acuminata, 4-6-pollicaria, serrata, serraturis saepe 



glanduliferis, basi angustata, ad petiolum obtusa v. emarginata, mem- 



branacea, penninervia, pube brevi conspersa praesertim ad venas et iu 



pagina inferiore. Eacmi axillares v. supra-axillares, simplices, folio 



breviores. Flore$ fceminei cum masculis in parte inferiore mixti, su- 



periores omnes mascnli v. flos terminalis intcrdum fcemineus; omnes 



parvi, breviter pedicellati, bractea parva linear! fulti. Calyx marium 



expausus, lineam latus, extus pubescens. Stylus fcemineorum lineam 



longus, primo intuitu ovarium simulat. Ovarium ipsum sub stylo 



