iMONOGRAPHU ONAGREARUM. 55y 



nonnunqiiàm iiiucroiitiliti. Flores cum ov;irio 4 polUces longi. Calycis tulius carneus, 2 |-3 pol- 

 lices loiijus , vix 1 liiienni latiis , .ipicein vlmsùs aiupliitus, t'.iuce 4 liucas l.itus; linibi 

 se£;mpiita ij-i") lijieas Inuga , viriilescontia , semi-pelkicida , liiieari-l.uiceul.ita , ferè complii.'ata , 

 striata : cdstâ dorso in carinam tuhei"oult)Suni produL-tà. PcLala rj-i5 liniMS lonça , totidcimiue 

 lata, prolundè Mloiia . multinervia : ungue ncrvisque lutesceiiUl'us. Filaiiienta G-8 liiicas long\i, 

 cariiea. Anllicr.Te 5-6 lineas loii^îc, j lineam i ila;, citrina;. Ovaiium 7-S lineas lonççum : angulis 

 pubesceiitihus. Stylus 3 -3 ; pollices '.ongiis, lilameiita plerumquè superaus. Sligmuta 4-0 lineas 

 longa. (Capsula matura ac seraina h.iud suppetunt.) 



CeleLerrimus Nuttall detexit in collibus aridis ad ripas ilumiuis Mis- 

 sowi. — (V. V. c. sine fruct.) 



LAVAUXIA NoB. 



{Lavauxia Nob. in Suites ùBuflon, Hist. des Plant, phan. v. 4) p-ig- SGj. 

 — OEiiolherœ s[)ec. auctor.) 



Calycis tubiis loîigissinuis, ci-assus , tetragonus , cylindraceus, 

 fauce ampliatus ; limbi segmenta îubo multo bi eviora, apice corni- 

 culata. Petala obcordata ve! flabelliforniia , basi conspicuè pa!- 

 mato-5- V. 7-nervia : nervo niedio pennivenio. Stamina corollâ 

 breviora : filaracnta adscendentia v. decliiiato-adscendentia , an- 

 theris loiigiora. AntherîB basi cmarginatse, aj>ice obtusaî. Ovaridm 

 obovatum, V. oblonguni , brcvè stipitatLira , 4-costatiim , cristato- 

 tetraquetrum, crassum, 4-locularc ; ovula in singidis locidis creber- 

 rima,sessilia, liorizontaba, 2-seriata, siiperposita. SxYLLsdeclinatus, 

 longissimus , stamina plerumquè superaus. Capsula lignosa , ova- 

 lis, V. obovata acuminata, transversè rugosa , 4-dentata, 4-costata, 

 iufernè tctragona, supernè cristato-tetraquetra, 4-locularis,4-valvis; 

 cristîB lœves, cartilagineœ ; costse crassae, lignosae, plaiiiusculae ; 

 endocarpium et dissepimenta cartilaginea; placenta tetragona : 

 apice fîliCormi, aspermo. Semisa creberrima , majuscula, horizon- 

 talia, in singulis loculis 2-sepiata, superposita, subsessilia, mutuà 

 corapressione subdolabriformia v. cubica, truncata , apice sub- 

 marginata , sub lente gi-anulosa : integumento exteiiori crusta- 

 ceo , crassiusculo, variegato. Embryo subovaiis : cotyledones el- 

 liptica?; radicula brevissima, conica, obtusa, centripeta. 



Herbœ perenncs v. annuae , caulescentes, cœspitosae, vix ramosse. 

 Folia dentata v. pintiatifida, longé petiolata , nervosa , plerumquè 

 appi'oximata. Flores magni , axillares , suaveolentes , nocturni , 

 fugaces. Tubus calycinus prœfloratione semper erectus; limbus in 

 alabastris oblongus, acurainatus, apice 4-corniculatus. Goroîla alba 

 demùmque carnca, vel flava demùmque aurantiaca. 



Species omnes americanae. 



