SISYMBRIUM BINERVE, C. A. MEY.
S IS YM B R IU M ,1 (Linn.) C. A. Mey. '
Subgenus DESCUREA, C. A. Mey., in Lcdeb., Flor. Alt., vol. 3, p. 135 ; Id., Enum. Plant. Caucas., p. 189.— Genus
Descour Ex, Guett. — Genus Descurainia ( ex parte ) , Webb, Phytogr. Canar.
SISYMBRIUM BINERVE, C. A. Mey., Enum, Plant. Caucas., p. 189. — Hohenack.! Enum. Plant. Talyc/i., p. 140.
HeSPERIS ORIENTALES MARITIMA, L kÜCOII FOLIO INCÀNO , FLORE M1N1MO, Touiii., Cpr.
Hksperis galatica maritima, leucoii folio incANO, flore MiNiMO, Toum. ! Herb.
Hesperis rahosissima, Desfont.! Cat. Hort. Par.-, et ad specimina Tournefortiana in Herb. Mus. Par. (Non Hesperis
ramosissima Del.! Ægypt., quæ Malcolmia atgyptiaca, Spreng., et Hesperis diffusa, Do$u. ! ■ )' 1 -
Ex parte Hesperis rahosissima, Desf., Flor. Atlant,, vol. 2, p. g r . (Scilicet quoad Synonymon Tournefortii solum. Specimina
autem Mauritanica, sub Hesperidis ramosissimce nomine iu Fontanesii Herbario Atlantico obvia, ad ejusdém auctoris
Hesperidem arenariam absque ullo dubio pertinent. Icon Floræ Atlanticæ, tab. 161, aut pcssima est et mere idealis, ant
plantam nobis omnino ignotam sistit. )
Ex parte Hesperis ramosissima, D. C., Syst., vol. 2, p. 455, et Prodr., vol. 1 , p, 189 (quoad plantam Orientalem).
Planta annua, tomento scabriusculo irregulariter ramoso plus minusve induta (plerumque incana ) , vegetior sæpissime
pluri-caulis v. ab ima basi ramosa, partibus omnibus ( stigmate excepto ), Malcolmioe parvifloroe adeo similis ut ægerrimeab
ea sine analysi dignoscenda. Radix descendens, gracilis, inferne plus minusve ramosa. Caules erecti dum exiles, ascen-
dentes v. subdiffusi dum plures, graciles, teretes, foliosf, plus minusve flexuosi, vegetiores paniculato-ramosissimi (plerumque
fere a basi), demum 1/2-1-pedales. R ami similes cauli at tenuiores, ascendentes v. erecti, simplices, v. plus
minusve ramulosi, axillares, sparsi. F olia sparsa (iufima tarnen plus minusve conferta), crassiuscula, succulenta, i-nervia
(nervo tenui,, sub indumento latente, secus apicem evanescente), obtusa, omnia exauriculata; radicalia infimaque
caulina petiolata, obovato-v. oblongo-spathulata, sinuato-pinnatifida v. sinuato-dentata (lobis dentibusve utrinque2-5,
oblongis v. obovatis, obtusissimis), 1/2-a pollices longa, plerumque mox emarcida; reliqua sessilia, gradatim minora;
caulina inferiora oblouga v. lanceolato - oblonga, modo integerrima v. obsolete repando-dentata aut denticulata, modo
profunde dentata; superiora ramealiaque plerumque integerrima et linearia v. lineari-spathulata. R acemi oppositifolii et
terminales, solitarii, erecti, substricti, aphylli, ebracteati, multiflori, pedunculati, fructiferi 3-6 pollices longi. Rachis
subfiliformis. F lores minuti, pedicellati, sub anthesi conferte subcorymbosi. P bdicelli sparsi, floriferi calyce æquilongi v.
longiores, filiformes, erecti; fructiferi plus minusve incrassati (siliquæ tarnen plerumque tenuiores), 1 i/a-3 liDeas longi,
erecto-paten tes, v. subpatentes, v. interdum suberecti. Calix i - i 1/2 lineam longus, deciduus, herbaceus, extus pube stellata
subcanescens ( margine excepto), sub anthesi suberectus. Sepala obtusa, mutica, ecarinata, esaccata, biformia, marginc
membranacea; lateralia naviculari-oblonga; anticum et posticum lineari-spathulata, planiuscula, lateralibus subdimidio-
angustiora et paululo breviora. Petala lilacina , longe unguiculata, calyce dimidio paulo plusve longiora ( 1 1/2-2 1/2 lineas
longa); lamina ovali-v. obovato-v. subrotundo-cuneiformis, exserta, patens, apice rotundata v. obsolete retusa; unguis
spathulato-linearis, calyce subæquilongus. Glandule hypogynæ 2, aurantiacæ, minimæ, rotundatæ (haud raro emarginatæ
v. bilobæ), singulatim staminibus imparibus interpositæ. Stamina tetradynama, imparia calycem vix superantia, paria pauio
longiora, omnia petalis breviora. F ilamenta compressa, submembranacea, edentula; breviorafiliformi-spathulata, longiora
sublineari-filiformia. Antheræ minimæ, lutescentes, cordato-orbiculares, obtusæ, inæquales, staminum imparium nempe
illis staminum parium subdimidio majores. Pistilluh sub anthesi staminibus paribus æquilongum. Ovarium estipitatum,
columnare, gracile, teretiusculum, pube ramosa tomentosum, biloculare, loculis 15-20-ovulatis. Ovula suspensa, in seriem
siugulam superposita. Stylus columnaris v. subclavatus, brevis, glaber, obsolete tetragono-anceps, ovario fere æquicrassus.
Stigma terminale, hemisphæricum, lutescens, stylo paulo crassius, demum haud raro plus minusve concavum. Siliqua 7-15
lineas longa (plerumque subpollicaris), bilocularis, i 5- 3o-sperma, bivalvis, gracilis, columnaris, teretiuscula, torulosa,
ecarinata, laxe puberula, stylo brevi (1/2-1 lineam longo) nunc crassiusculo nunc subfiliformi apiculata, recta v. subarcuata,
nunc subpatens mine erecta v. arrecta. Nervi placentarii filiformes, subinclusi. D issepimentum ahguste lineare (1/3-1/2
lineam latum), hyalinum, nervulis geminis axilibus juxtaposilis distinctis (v. interdum confluentibus sicut in Malcolmiis)