184 CONTRIBUTIONS TO 



tione irregulariter obvoluto-conduplicata,* subgibbosa. Sta- 

 mina 5, medio corollse tubo inserta, insequilonga, inclusa : 

 Antherce 2-lobse, imo profunde cordatae, lobis ovatis longi- 

 tudinaliter dehiscentibus : Pollen oblongum, longitudina- 

 liter 3-sulcatum. Ovarmrn subsessile, disco carnoso sub-2- 

 lobo stipatum, 2-loculare, placentis centralibus dissepi- 

 mento adnatis, multiovulatis. Stylus apice compressus, 

 incrassatus, subincmvus. Stigma obliquum, compressum, 

 truncato-2-lobum. Capsula calyce persistente testa, 2-locu- 

 laris, imo septicido-2-valvis, valvis indivisis placenta cen- 

 trali demum solutis. Semina plurima, minuta, subspheenca 

 vel ovata, hilo ventrali, testa reticulato-foveolata,^costis 

 intermediis elevatis. Embryo in axi albuminis carnosi, 

 apice subcurvatus, radicula infera tereti fere recta cotyle- 

 donibus parvis ovatis subcompressis 3-plo longiori. — Sut- 

 frutices vel herbse Austro-Americani subviscosi ; foliis alter- 

 nis, integerrimis, floralibus geminis, pedunculis extra-axu- 

 laribus, solilariis, \-floris, demum deflewis; corolla albida vel 

 violacea. 

 1. Petunia nyctaginijlora, Juss. Ann. Mus. 2. 215. /. 47'/* ** 

 — Hoi. Mag. t. 2552. Sweet Fl. Gard. 2. 119. Trait, tab. 7%- 

 — Nicotiana axillaris, Lam. III. 2237 ,•— herbacea diffusa, 

 villoso-glandulosa, viscida : foliis inferioribus alternis, 

 ovato-oblongis, obtusis, pubescentibus, basi in petiolum 

 attenuatis ; foliis floralibus sessilibus, cordato-ovatis, oppo- 

 sitis: pedunculis sub 3-floris, folia superantibus : tubo 

 corollas calycem multo excedente, limbo lato, obtuse 

 Rio de la Plata. 



This plant is so well known in our gardens, that it is need- 

 less to add any particular description. 



* A mode of aestivation (as seen in P. violacea) to approach near Sa ■ 

 piglossis ; its definition may perhaps be thus extended, nempe ; lobis om- 

 nibus medio conduplicatis, plicaturis utrinque versus superiorem torsi , 

 hujusce omnino interioris marginibus in flexuris contiguis utrinque obv< 

 lutis, unici lateralis omnino exterioris imbricatis, caeterorum torsive irfl 

 catis et vicissim obvolutis, sed duorum inferiorum dimidiis proximis g 

 boso-inflatis, inferne voluto-plicatis, superne autera simpliciter imbrica i 

 this complex mode of aestivation is shown in Plate 24 of the " Illustration* 

 &c." 



