MiraUlieis.] CXXVITI. NTCTAGINE^. 5 



stricto ; limbus ineequaliter 4-lobus, patens, plicatus. Stamina 4, liypogyna, exserta, 

 filamentia capillaribus ; anthers didymse. Ovarium ovoideum ; stylus filifomiis, stigmate 

 capitellato papillia stipitatis onusto. Anthocarpium crasse coriaceum, obovoideum v. 

 ellipsoideum, antice teres v. trigonum, dorso profunde sulcatum, marginibus inflexia 

 spinulosis, sulco 2-carinato. Seminis testa pericarpio adhserens ; embryo uncinatus, coty- 

 Icdonibus latis albumen involventibus, radicula elongata descendente extraria. — Herbse 

 prostratse, dichotome ramosse, pubesccntes v. pilosrc. Folia opposita, paribus iniequalibus, 

 petiolata, basi ina^qualiaj acuta v. obtusa, integen-inia, plana v. marginibus undulatis. 

 Involucra axillaria, pedicellata, solitaria. Flores parvi, purpurei. 



Species 1, regionum arenosarum calidionini Araericae occideiitalis tarn borealis quam australis in- 

 coU.~atois. m DC. Prod. xiii. ii. 434. S. Wats. Set Calif, ii. 3, i7ied. rrm-tn.f. Fnwt.iW. 182, 

 t. 214. Lam. Ill t. 58. nUer. Stirp. f,Z\. 



5. Boerhaavia, Linn. Gen. n. 9 (Boerhavia). — Flores bracteolati, bracteolis minutis 



rarissime verticillatis et involucellum formantibus. Perianthii tubus brevis v. longiUs* 



cuius, basi ovoideus, supra ovarium constrictus ; limbus infundibularis, margiHe fi-lobua^ 



lobis patentibus plicatis, deciduus. Stamina 1-5, exserta, filamentis capillaribus insequi- 



longis basi connatis ; antherre didymse. Ovarium stipitatum, obliquum, in stylum capil- 



larem attenuatum^ stigmate peltate. Anthocarpium obovoideum tufbinatum v. clavatum, 



obtusum V. truncatum, teres 5-costatum v. alte 5-gonum faciebus depressis, minute v* 



grosae glandulosum, humectatum mucosum. Utriculua oblongus. Seminis testa pericarpio 



adhajrens ; embryo uncinatus, cotyledonibus tenuibus latis albumen parcum involventibus 



exteriore majore, radicula descendeuto elongata extraria. — Herbee erectae v. diffuste, basi 



lignosa3, glabrae glaiididosa3 v. pubescentes, ramis saipius divaricatis. Folia opposita, 



subsessilia v. petiolata, paribus non raro inaequalibus, integerrima v, ainuata, crassiuscula. 



Flores parvi v. minuti, paniculati umbellati v. capitellatij ac3siles v. pedicellati, pedicello 



cum flore articulato, bracteolia siepe deciduis. Anthocarpium parvum, sfepe grosse glan- 

 dulosum. 



Species ad 30, sed paiiese inordinate multi plica tae, per regiones calidiores lata dispersse. — Chois. in 



DC. Prod, xiii, ii. 449. Walp. Ann. iii. 298, v. 722. G^rt7i. Fruct. ii. 208, t. 127. Miq. Ft. Ind. 



Bat. \. 991. A. Gray in Amer. Journ. 8c. ser. 2, xv. 321. Benth, Ft. Austral, v. 277. Griscb. Fl. 



BHt. W. Ind. G9. BaU. et Gibs, Bomb, Fl. 213. GHseb. PI. Lorents. 40. Jacq. Hort, Find. i. t, 4 



ad 7; Obs.t. 84; Fragm. t. 46. Cav. h. t. 112. Belile, FL Eg. t. 3. Wight let. ^14,^1 5^ 17G6. 



F. Mnell PI. Vict. ii. if. 67. Koischy, PI Tinn, i. 18. J. A. Schmidt in Mart, FL Bras. xiv. ii, 

 t. 8G. 



G. Senkenbergia, Schaiier in LinnaUj xix. 711. (Tinantia, ilfarf. d Gal. hi Btill. Acad. 

 Brnx. xi. i, 240, non Scheidw. Lindenia, Mart, ei' Gal. I.e. x. ii. 357, non Benth.). — Flores 

 spicati V. racemosi, bracteolati, bracteolis deciduis minutis. Perianthium membranaceum, 

 infundibularc, tubo basi recto v. curve supra ovarium constricto ; limbus 5-lobus, pHoatus, 

 Stamina 3-5, exserta, fdanicntis capillaribus insequalibus ima basi connatis ; authcraj 

 didyiuie. Ovarium ovoideum; stylus capillaris, stigmate capitato lobulato. Anthocarpium 

 V. erectum et ellipsoideum, v. clavatum et 5-costatum, v. pendulum et subcylindraccum 

 latere gibbum. Utricidus stipitatus, obovoidcTis v. clavatus, membrauaceus. Seminis 

 testa pericarpio adluerens ; embiyo uncinatus, cotylodunibus latis toimibus albumen 

 farinaceum involventibus, interiore multo minore, radicula elongata descendente extraria, 

 — Herba? gracitos, erectie, basi sublignosie, glabra; v. pubescentes, ramulis supcrne visci- 

 dulis. Folia opposita, petiolata, ovata v. hastato-ovata, integeiTima v. siuuata. Flores 

 parvi, in racemos spicasve terminales dispositi, albi v. rosei. 



Species 4, Mexici borealis incolsfi, Chois. in DC. Prod. xiii. ii. 4o7 (Tiuantia). A, Gray in 

 Amer. Jmini, 8c. set. 2, xv. 323 {Botrhaavi^ sect.). 



Genua in sectionos 2 facile divisum. 



1. Perianthium basi elongatum, c.irvum ; anthocarpium pendulum, cylindraceo-claratum, curvUm, 

 tino latere gibbum, vcrtice trunc;ito 5-gibboso, S. gypsoj^hihidrs {ThiatUia, Chois.). 



