262 O- ^- Schulz. — Cruciferae-Brassiceae. 



ratte, Fl. libyc. Prodr. {<9<0) 24. — Didesmis houd. Hort. Brit. (1830) 266. — Ba- 

 pistrum sect. Didesmus Hook. f. in Benth. et Hook. f. Gen. I. i. (1862) 99; Cosson, 

 Comp. Fl, atlant. II. (1885) 312; Prantl in Engl.-Prantl, Pflzfam. HI. 2. (1890) 181; 

 Dalla Torre et Harms, Gen. Siph. (< 901) 186. 



Sepala suberecta, exteriora linearia, sub apice vix cornuta, interiora oblongo-ovata, 

 basi subsaccata. Petala alba; lamina anguste obovata, dense venosa, apice leviter emar- 

 ginata, ad basin in unguiculum paulo breviorem tenuem paulatim angustata. Glandulae 

 nectariferae laterales minutae, depressae; niedianae semiglobosae. Stamina 6; antherae 

 oblongae, obtusae. Pistillum subcylindricuni ; gynopborum subnullum ; articulus inferior 

 brevis, 1-ovulatus; superior basi subinflalus, etiam 1-ovulatus, in slylum manifestmn 

 attenuatus; stigma depresso-capitatum. Siliculae biarticulatae, tandem vafde coriaceo- 

 indm'atae, septigerae; articulus inferior cubicus vel turbinatus, indehiscens, persistens, 

 longitudinaliter elevatim striatus vel gibberosus, articulo superiori aequicrassus, mono- 

 spermus, sed interdum rudimentarius et tenuior; articulus superior ovoideus, circuilu 

 acriter quadrangulus, caeterum elevatim reticulato-rugosus, indehiscens, separabilis, mono- 

 spermus, raro sterilis; rostrum elongatum, pungens, subcurvatum. Semina breviter 

 ovoidea, ca. 1 ,5 mm longa, vix compressa, in articulo inferiore pendentia, in superiore 

 erecta, brunnea; testa laevis; funiculus brevissimus, linearis. Cotyledones longitudina- 

 liter conduplicatae, sessiles, emarginatae, — Herbae annuae. Radix palaris. Caulis a 

 basi ramosus, pilis brevibus retrorsis dispersis scaber: rami diffusi. Folia simplicia vel 

 pinnatifida. Racemi ebracteati. Pedicelli breves. 



Species 2 in regione mediterranea orlentali praecipue locis arenosis mari finitimis 

 nascentes. 



Clavis specierum. 



A. Articulus siliculae inferior cubiformis, gibberosus. Folia inferiora 



simplicia vel lyrato-pinnatipartita, lobis ellipticis vel oblongis . i.D. aegyptius. 



B. Articulus inferior siliculae turbinatus, striatus. Folia inferiora 

 bipinnatisecta, lobis linearibus t. D. hipinnatus. 



{. D. aegyptius (L.) Desv. Jom-n. Bot. III. 4. (1814) 160, t. 25, fig. 11; DC. 

 Syst. II. (1821) 658 et Prodr. I. (1824) 227; Webb, Fragm. (1854) 21; Boiss. Fl. 

 Orient. I. (1867) 404 et Suppl. (1888) 63; Aschers, et Schweinf. Illustr. Fl. Eg. (1887) 

 42; Dui-and et Barratle, Fl, lib. Prodr. (1910) 24. — Mya^rum aegyptiiim L, Spec. 

 ed, 1. (1753) 641; Deless. Icon. sei. pl. II. (1823) 26, t. 92. — Bapistrum aegyptium 

 Crantz, Class, Cruciform. emend. (1769) 106; Coss.! in Bull, Soc. bot, France XXII, 

 (1875) 46 et Illustr. Fl. atl Fase. III. (188 8) 94, t. 61, fig. 12 — 13. — Cahile aeyyptia 

 Spreng. Syst. veget. II. (1825) 852, — Didesmus aegyptitis Des\. yai\ j^innatus Jau- 

 bert et Spach, Illustr. pl. orient, V, (1853—1857) t, 436, — D. aegyptius a. typicus 

 De Haläcsy, Consp. Fl. graec. I. (1901) 121. — Radix annua. Caulis erectus, 0,10 — 

 0,40 m alt., valde flexuosus, obtusangulus, plerumque a basi ramosus, pilis rigidis bre- 

 vibus 0,1 — 0,4 mm longis retrorsis dispersis scaber, saepe violaceus; rami adscendentes 

 vel diffusi. Folia inferiora petiolo 1,5 cm longo, pilis dispersis reflexis scabro, simplicia, 

 oblongo-elliptica, apice obtusiuscula, margine dentibus utrinque 6 — 8 inaequalibus in- 

 structa, basin versus cuneata integraque; folia media petiolo 1,2 — 1 cm longo, simpli- 

 citer lyrato-pinnatisecta, 5 — 2-juga, lobo terminali elliptico, acuto, dense subserrato, 

 lobis laterahbus oblongis, serratis; folia superiora breviter petiolata, 2 — 1-juga, lobis 

 linearibus, saepe integris; omnia carnosula, subglauca vel plane violacea, pilis rigidis 

 brevibus sursum curvatis dr dispersis obsita, etiam ciliata. Racemus sub anthesi laxius- 

 culus, dein valde elongatus, 15 — 50-florus. Pedicelli breves, 2,5 — 1,5 mm longi, fili- 

 formes, interdum pilosuli. Sepala 3,5 — 4,5 mm longa, suberecta, exteriora linearia, 

 sub apice obtuso vix cornuta, interiora oblongo-ovata, acutiuscula, saepe violacea, parce 

 pilosa. Petala alba, extrinsecus rubella, deflorata ad basin violacea, in sicco flaves- 

 centia, 6,5 — 10 mm longa; lamina oblongo-obovata, apice subemarginata, dense sub- 

 tiliter venosa, ad basin sensim in unguiculum cuneatim angustata. Slamina 4,5:6 mm: 



