ON SOUTH-AMERICAN APOCYNACEE. 185 
racter of no distinctive value, as this is also seen in many other genera. As mentioned 
in a preceding page (p. 183), Amblyanthera was suppressed by the authors of the * Genera 
Plantarum’ (ii. p. 726), and absorbed into Mandevilla, which is an essentially different 
genus: in the former the plants are very bushy, the branches wanting the peculiar 
stipules of the latter; the only plant known of Mandevilla is, on the contrary, a very 
slender climber, with a different inflorescence. Amblyanthera has a condensed panicle 
of many flowers, on short pedicels hidden by large, broad, foliaceous bracts, much imbri- 
cated—a feature only approached by Laseguea, where the bracts are linear and very 
narrow. Amblyanthera, however, when properly restricted, constitutes a very good genus. 
Moller evidently was not aware that, besides the basal lobes, the rest of each anther is 
formed upon a peculiar plan; the want of this knowledge led him to unite with it a host 
of heterogeneous species, a list of which is here appended. Müller, in his illustrations of 
Amblyanthera, gives a correct representation of one of the species in his plate 45; but his 
plate 44 represents a very different plant, which I have referred to my genus Mitozus. 
The following is an amended diagnosis of the genus, according to my own observa- 
tions. 
AMBLYANTHERa, Müll. (in parte), char. emendato. Sepala 5, acutissime lineari-lanceolata, erecta, sub- 
membranacea, paulo quincuncialiter imbricata, intus squamula deltoidea vel ovata insequaliter 
lacinulata singulatim munita. Corolla majuscula ; tubus cylindricus, sub medium angustatus, intus 
ad constrictionem lineis 5, vel annulo retrorsum piloso donatus, superne campanulatus ; segmenta 5, 
dolabriformia, angulo sinistro acuta, latere altero horizontaliter rotundata, sstivatione dextrorsum 
convoluta, demum expansa, tubo breviora. Stamina 5, inclusa, annulo piloso insita ; filamenta sub- 
brevia, linearia; anthere longiuscule; connectivum membranaceum, late lineare, coloratum, apice 
acutum, medio loculis 2 parvis ovatis collateralibus polliniferis signatum, margine sub medium 
callo magno incrassatum ; callus superne hippocrepiformis, inferne truncatus et in lobulos 2 breves 
obtusos fissus. Discus urceolatus, carnosus, usque ad medium in lobos 5 obtusos fissus; ovaria 
2, acute oblonga, disco paullo longiora; stylus filiformis; clavuncula incrassata, oblonga, longi- 
tudine 5-glandulosa, imo appendice membranacea signata, mox ad antheras adglutinata, his hinc 
in conum coherentibus ; stigmata 2, parva, acuta, terminalia. Folliculi 2, teretes, torulosi, sub- 
arcuati, apice interdum nexi, valde pilosi ; placente e marginibus suture ventralis introflexis, anguste 
lineares; semina plurima oblonga, ad ventrem concavum raphe longitudinali signata; coma pilis 
rufulis sericeis 2-3plo longioribus coronata. bt 
Frutices plerumque Brasilienses, valde ramosi ; ramuli sepe fistulosi, flexuose subscandentes, hirsuti, 
cum axillis remotis; folia opposita, oblonga, imo sepius cordata, acuminata, eglandulosa, puosc 
vel subhirsuta, petiolata ; racemi singulatim laterales; pedunculus elongatus, EE ae 
pluriflorus ; pedicelli breves, imo bracteati ; bractea magna, foliosa, ovata, longe cuspidata, siio, 
pedicello 3—4plo longior ; flores majusculi, coccinei vel lutescentes, sepius extus niveo-tomentosi. 
l. AMBLYANTHERA HIRSUTA, nob.: Echites hirsuta, Velloz, Fl. Flum. p. 113, Icon. iii. tab. 44 (non R. 
& Sch., nec Stadelm. nec Hook.) : Echites Fluminensis, A. DC. Prodr. viii. p. 452: Amblyanthere 
Fluminensis (in parte), Müll. Fl. Bras. xxvi. p. 149. In prov. Rio de Janeiro, Boa Vista, circa 
Itagoahy (Velloz) : v. s. in herb. Mus. Brit. Itagoahy (Bowie € Cunningham, in flore et fructu). 
The above specimen, from the same locality, is quite in accordance with Velloz’s draw- 
ing in regard to the length of the internodes, the size and shape of the leaves, and the 
character of the inflorescence, differing only in the fruit, which corresponds with that of 
the genus as given by Müller. Velloz’s drawing of the follicle is that of an Asclepiad, az 
2 B 
