ON SOUTH-AMEEICAN APOCYNACEiE. 29 



at irregular alternate intervals, a thick short line extends horizontally, terminating in an 

 external hook ; between these intervals are a number of very fine cross parallel Unes, 

 somewhat slanting, seeming like a long continuous spiral transparent cell, winding round 

 the axis, giving it a somewhat ladder-like appearance, a structure almost unique*. These 

 hairs do not emanate from an apical coronal ring, as in the Uchitece, but from numerous 

 scabrid points all over the surface of the testa, which bear the hairs, the lower ones 

 being very short, gradually lengthening upwards, the upper hairs exceeding the length 

 of the seed. The floral characters are founded on the examination of the single 

 flower above-mentioned. 



Manothrix, not). : Flares subparvi : calyx parvus, imo cupularis, margine in lacinias acutas 5-fidus : 

 corolla tubularis, extus glabra, tubo imo pauUo angustiore, ad medium comstricto, intus infra 

 constrictionem annulo lato densissime piloso, imo glabro, superne rentricoso, utrinque glabro, 

 parallele nervoso, subplicato, segmentis 5, paullo brevioribus, obtuse oblongis, dextrorsnm con- 

 yolutis : stamina ex annulo 'piloso orta, segmentis alterna ; filamenta compressa, linearia, retrorsum 

 pilosa, erecto-conniventia, longitudine antherarum ; antheree angnstatBe, subexsertse, in conum 

 cohaerentes, comese, acuminatse, dorso pruinosse, antice paxdlo sub medium et infra locellos pollini- 

 feros glandula puberula munitse, et bine ad filamenta affixae, imo in furcas 2 breves obtusas 

 vix fissse : ovarium parvum, conice oblongum, pilosum, calyce suffultum, 2-loculare : stylus tenuis, 

 stamina attingens, apice valde incrassatus, et viseosus, staminibus adbserens ; stigmata 2, breviter 

 setacea, terminaHa. Fructus capsularis, 2-locularis, conice cylindricus, 2-sulcatus, in suleis sep- 

 ticidus, valvis ad axin ceatralem dehiscentibus, marginibus introrsum inflexis et placentiferis : 

 semina numerosa, hilo ventrali ad placentas aflBxa, imbricata ; testa fusiformis, scabrida, pibs forma 

 peculiari vestita, inferioribus brevibus, gradatim longioribus, sub apicem longissimis, erecte sparsis : 

 embryo in albumine copioso, parvus, cotyledonibus ovatis, radicula 4plo breviore, superne spectante. 



Erutices Brasilienses, ramulis fistulosis, ad axillas plus minusve transversim nodosis .- folia oppo- 

 sita, elliptica, petiolata : racemi brevissime pedunculati ; pedunculo paucifloro, pedicellis tenuibus 

 brevibus. 



1. Manothrix valida, nob. : ramulis' crassiusculis, fistulosis, opace brunneis, interrupte striatis, glabris, 

 lenticellatis, axillis oppositis, vix nodosis, linea transversal! sulcata nexis : foliis ellipticis, imo 

 canaliculatim recurvis et acutis, apice in acumen acutum subito constrictis, marginibus subrevolntis, 

 glaberrimis, rigidule cbartaceis, supra fusco-viridibus, opacis, minutissime granulatis, nervis omnino 

 immersis, subtus palbde opacis, rugulosis, enerviis, costa striolata vix prominula; petiolo fnsco, 

 canaliculato, imo crassiore, limbo 14plo breviore ; racemis fructiferis et terminalibus brevibus, 

 pedunculo cicatricibus 3-4 notato, unico fractifero persistente : capsula subsessili, subcylindrica, 

 2-sulcata, apice attenuata, 2-nodosa; pericarpio sublignoso, opace granuloso, glabro, imo calyce 

 aucto sufinlto ; cseteris mt in char. gen. In Brasilia : v. v. et sice, in hb. meo (n. 2052) in montibus 

 Organensibus. 



I found this species later in the same year than the following one, without flowers : its 

 branches are 2-3 lines thick, with axils |-1 in. apart ; the leaves are 3 J in. long, If in. 

 broad, on petioles 3 lines long. The capsule is terminal on short lateral branchlets, or 

 on the main stem, upon a short thickened peduncle 4 lines long, marked by 3 or 4 

 crowded cicatrices of others that have fallen, perhaps prematurely : this capsule is 2| in. 



* Whence the generic name, fiavbs {rams), dpl^ (capilla). 



