7» 



CRUCIFERjE. 



2. DRABA TOLUCENSIS. "[" 



D. caulibus ramosis, foliatis, hirtis; foliis radicalibus spathulatis, obtusis , hirtellis; cauliuis 

 oblongis, margine ciliatis; spicis corymbiformibus; siliculis ovatis, glabris. 



Crescit infrigidis Eegni Mexicnni, prope urhem Tolucrn, alt. i38o hexapod. % Floret 

 Septembri. 



Herba caispitosa. Radix fusiformis, perpendicularis. Cacles adsccndentes ct crecti , a-3-pollicares , sim- 

 plices aut ramosi, foliali, teretes, hirti. Folia radicalia creberrima, stellato-congesta, spathulata, obtusa, 

 integerrima, crassiuscula , utrinquc tenuissime hirtella, margine villosa, juniora apicem versus utrinquc 

 alhido-lanata , 9-12 lineas longa, 2~-5 lineas lata. Folia caulina altcrna, subscssilia, oblonga, obtusa, 

 glabriuscula, margine ciliata. Sncs in caule ct ramis tcrminales, abbrcviata:; florifera: haud suppctunt; 

 fructifere corymbiformes. Silicdlje longe pcdicellata:, ovatse, acuto-mucronatffi, dissepimentn parallelc 

 coinprcssa: , virides, glabra;, magnitudine grani caunabis, biloculares, bivalvcs; pediccllis 2-4 lineas longis, 

 patcntissimis, hirtcllis; dissepimento diaphano, haud pcrforato, pcrsistcnte. Semina 5-8 in quolibct loculo, 

 sutura? ope podospcrmii capillaris afiixa, pcndula, obovata, comprcssa , kevia , fusca. 



3. DRABA jouullensis. t 



1). caulibus ramosis, foliatis pediccllisque piloso-viscosis, fructifcris palcnti-subreilexis ; 

 foliis caulinis oblongis, pilosis; pctalis emarginato-bilobis; siliculis subrolundo-ovatis, pilosis. 

 Crescit in monte ignivomo Mexicdno Jorullo. Ifc Floret Septembrl 



Caules 3-5-poIlicares, ramosi, teretes, piloso-viscosi. Folia radicalia mihi ignota; caulina alterna, sub- 

 sessilia, oblonga, acutiuscula, basi anguslata, utrinque pilosa, 5-6 Jincas longa. Smce in caule ct ramis 

 terminales, erecta:. Flores pcdiccllati, magnitudine floris Alyssi calycini; rhachi pedicellisque viscosO- 

 pilosis; fructiferis 2 lineas longis, patcnti-subreflexis. Caltx tctraphyllus, patulus ; foliolis obovato-cllip- 

 ticis, obtusis, externe pilosis, a^qualibus, obsolete nervosis. Petala 4» hypogyna, aequalia, longitudine 

 calycis, obovata, inferne in ungucm angustata, apice emarginato-biloba, alba (?), glabra. Stamina sex, 

 hypogyna, tctradynama, longitudine corolla;. Filamenta subulata, glabra. Axtheax reniformcs. OvABlUM 

 ovatum, pilosum. Stylus brcvis, glaber. Stigma obtusum. SlLICOlA subrotundo-ovata, stylo persistente 

 acuminato-subulata, dissepimento parallcle compressa, pilosa, viridis, magnitudine grani cannabis, bilo- 

 cularis, bivalvis; loculis /f-5-spermis; dissepimcnto diaphano, persistcnte, haud perforato. Semina elliptico- 

 lenticularia, Ixvia, fusca, suturaj aflixa ope podospermii capillaris, peudula. 



4' DRABA Bonplaxdiaka. j - 



D. caulibus sufTruticosis, procumbcntibus j ramis foliosis; foliis scssilibus, imbricatis, ovatis, 

 tomentoso-scriccis, incanis; floribus solitariis, violaceis. 



Crescit locis frigidissimis , nivosis^ in monte Assuay^ alt. 1980 hexapodarum. (Regno 

 Quitensi.) \) Floret Junio. 



Frutex (?) ramosissimus, 6- io-pollicaris. Radix fibrosa. Caules complures, procumbentcs, rarissime 

 crecti; rami apice foliosi. Folia decussato-opposita (?), approximato-subiuibricata, ovata, tomentoso- 



