196 



CRUCIFEILE. XLII. BISCUTELLA. 



1 T. RUNCINA'TUS (Hook. 1. c.) H. Native of North 

 America, probably on the Rocky Mountains. 



Runcinate-leaved Thysanocarpus. PI. 1 foot. 



Cult. An insignificant plant of easy culture ; the seeds only 

 require to be sown in the open border early in spring. 



XLII. BISCUTE'LLA (from bis, double, and scutella, a sau- 

 cer ; in allusion to the form of its silicles.) Lin. gen. no. 808. 

 Gsert. fruct. 2. p. 278. t. 141. D. C. syst. 2. p. 406. prod. 1. 

 p. 181. 



LIN. SYST. Tetradynamia, Siltculbsa. Silicic flat, biscutate, 

 (f. 46. m.) with orbicular 1 -seeded cells, which are laterally 

 united to the axis. Style long, permanent (f. 46. m.). Seed 

 compressed. Embryo inverted. Perennial or annual herbs, 

 usually hispid, but sometimes downy or smoothish, with oblong 

 entire, toothed or pinnatifid, somewhat radical or cauline leaves, 

 and round erect stems, which are usually somewhat corymbosely 

 branched at the top by racemes, which when in flower are short, 

 but when in fruit elongated ; pedicels filiform, bractless. Flowers 

 yellow, scentless. 



SECT. I. IONDRA'BA (from iov, ion, a violet, and Draba, Whit- 

 low-Grass.) D. C. syst. 2. p. 407. prod. 1. p. 181. Med. 

 gen. nov. t. 1. f. 14. in Ust. new. ann. 2. p. 37. Calyx 2- 

 spurred at the base. Glands on the torus, very prominent. 



1 B. ADRICULA'TA (Lin. spec. 911.) calyxes bluntly 2-spurred ; 

 pods smooth, rough in the centre from elevated dots, with the 

 lobes meeting over the style at the top. Q. H. Native of Por- 

 tugal, Spain, south of France, southern parts of Germany, Sicily, 

 and Mauritania, in cultivated fields. D. C. diss. no. 1. 1. 1. f. 2. 

 Schkuhr. handb. 2. no. 1821. t. 182. Berg. phyt. 3. p. 55. icon. 

 Clypeola auriculata, Crantz. cruc. p. 93. B. auriculata /3, Lam. 

 diet. 3. p. 617. illust. t. 570. f. 2. Flowers pale yellow. 



Eared-ca\yx.ed Buckler-Mustard. Fl. June, July. Clt. 1683. 

 PI. 1 to 2 feet. 



2 B. ERIGERIFO'LIA (D. C. diss. no. 3. t. 1. f. 1.) calyxes 

 acutely 2-spurred ; pods smooth, almost meeting over the style 

 at the top (f. 46. m.). Q. H. Native of Spain, frequent in corn- 

 fields. Deless. icon. sel. 2. t. 55. B. auriculata var. a, Lam. diet. 

 2. p. 617. exclusive of the synonyms. B. Orcelitana, Lag. fl. hisp. 

 incd. Like B. auriculata, but differing in the spurs of calyx 

 being acute, not blunt. 



Erigeron-leaved Buckler-Mustard. Fl. June, July. Clt. 1819. 

 PI. 1 foot. 



3 B. HI'SPIDA (D. C. diss. no. 3. t. 1. f. 1.) calyxes acutely 2- 

 spurred ; pods smooth, rough in the disk from elevated dots, not 

 overhanging the style at the top ; stem hispid. O- H. Native 

 of Provence, Piedmont, and probably throughout Italy, on 

 mountains in places exposed to the sun. Sims, bot. mag. 2444. 



B. macrocarpa, Hort. Barrel, icon. 230 and 1219. Col. ecphr. 

 2. p. 49. t. 61. Mor. oxon. 2. p. 247. sect. 3. t. 9. f. 7. Plant 

 hispid with crowded hairs. 



Hispid Buckler-Mustard. Fl. June, July. Clt. 1818. PI. 

 1 to If foot. 



4 B. CICHORIIFO' LIA (Lois. add. p. 167.) calyxes rather acutely 

 2-spurred ; pods smooth, rough in the centre from elevated dots, 

 not overhanging the style at the top; stem villous. 1. H. 

 Native of stony places exposed to the sun, at the bottom of 

 the central Pyrenees, not far from the Bagneres de Luchon. D. 



C. diss. no. 4. t. 2. B. picridifolia var. Lapeyr. abr. pyr. 373. 

 Stems branched, rather reddish. Leaves runcinately-pinnatifid. 

 Flowers large. 



. Succory-leaved Buckler-Mustard. Fl. May, July. Clt. 1820. 

 PI. 1 to 2 feet. 



SECT. II. THLASPI'DIUM (from thlaspi, and eicoc, eidos, like.) 



D. C. syst. 2. p. 409. prod. 1. p. 181. Med. gen. nov. t. 1. f. 5. 

 from Ust. new. ann. 2. p. 38. Calyxes equal at the base. Glands 

 on the receptacle, hardly elevated. 



1. Annuce. Plants annual. 



5 B. LTRA'TA (Lin. mant. 354.) pods pilose, hispid in their 

 disks; radical leaves lyrate. H. Native of Portugal, 

 Spain, Calabria, Sicily near Palermo, north of Africa near Tan- 

 giers, &c. Bocc. sic. 45. t. 23. A very polymorphous species. 



Lyre-leaved Buckler-Mustard. Fl. June, July. Clt. 1799. 

 PI. 1 to li foot. 



6 B. RAPHANIEO'LIA (Poir. voy. bar. 2. p. 198.) pods even, 

 glabrous ; radical leaves lyrate. O H. Native of Sicily near 

 Palermo, and in Mauritania. B. laxiflora, Presl. ex Spreng. Dif- 

 fering from B. lyrata in the pods being very smooth, not hispid, 

 and perhaps the leaves are less cut. 



Radish-leaved Buckler-Mustard. Fl. June, July. Clt. 1819. 

 PI. 1 to 2 feet. 



7 B. MARGINA'TA (Tenore, fl. nap. p. 38,) silicles scabrous on 

 both surfaces, with brownish margins ; stem almost naked ; 

 leaves pilose, lyrate ; lobes blunt, with the terminal one very 

 large, bidentate. O ? H. Native of Naples. 



Marginate-podded Buckler-Mustard. Fl. June, July, Clt. 

 1820. PI. | foot. 



8 B. MARI'TIMA (Tenore, prod. fl. nap. p. 38. fl. nap. t. 61.) 

 pods smooth, with ciliated margins ; radical leaves lyrate. O- 

 H. Native of Goat's Island and about Fondi in Naples, by the 

 sea-side. Very like the two preceding species, but nevertheless 

 it differs in the pods being not smooth all over, nor pilosely- 

 hispid, but smooth in their disks, and ciliated along their mar- 

 gins in a longitudinal line. 



Sea-side Buckler-Mustard. Fl. June, July. Clt. 1824. PI. 

 1 to H foot. 



9 B. CILIA'TA (D. C. diss. no. 9. syst. 2. p. 410.) pods smooth 

 in the disk, but ciliated on the margins ; stem erect, elongated, 

 leafy ; leaves sessile, oblong, remotely toothed. O-H. Native 

 of Italy and Spain. B. coronopifolia, Willd. spec. 3. p. 474. 

 D. C. icon. gall. rar. 1. p. 12. t. 39. but not of Linnaeus. B. 

 A'pula, Lam. diet. 3. p. 618. exclusive of the synonyms. B. 

 didyma, Willd. enum. 2. p. 673. 



Ciliated-podded Buckler-Mustard. Fl. June, July. Clt. 1790. 

 PI. 1 foot. 



10 B. DEPRE'SSA (Willd. enum. 2. p. 673.) pods smooth in the 

 disk, but ciliated at the margins ; stem dwarf, somewhat diffuse ; 

 leaves oblong-obovate, cuneated at the base, remotely toothed. 

 O- H. Native of Egypt in the deserts of Alexandria. D. C. 

 diss. no. 10. B. pumila, Balb. cat. hort. taur. Pods con- 

 stantly ciliated at their margins along the sutural line. Perhaps 

 only a variety of B. ciliata. 



Depressed Buckler-Mustard. Fl. Ju. Jul. Clt. 1818. PL ft. 



1 1 B. MICROCA'RPA (D.C. diss. no. 11. syst. 2. p. 411.) pods 

 with hispid disks and ciliated margins ; stem almost naked, 

 much branched ; leaves almost all radical oblong, sinuately- 

 toothed. O-H. Native of Andalusia on the rock of Gibraltar 

 about St. Roch. B. tumidula, Lag. fl. hisp. ined. Flowers small, 

 in long racemes. 



Small-fruited Buckler-Mustard. Fl.Ju.Jul. Clt. 1819. Pl.lift. 



12 B. ERIOCA'RPA (D. C. diss. no. 12. t. 9. f. 2. syst. 2. p. 

 411.) pods pilosely-hispid in the disk; stem erect, simple; 

 leaves oblong-cuneated, somewhat toothed. Q. H. Gathered 

 beyond Spain on a journey to Mogodor by Broussonet. Pods 

 the size of those of B. A'pula. 



Woolly-fruited Buckler-Mustard. Fl.Ju.Jul. Clt. 1820. Pl.jft. 



13 B. COLU'MN.* (Tenore, prod. fl. nap. p. 38.) pods sca- 

 brous on the disks and margins with short hairs ; radical leaves 

 obovately-cuneated, acute, toothed ; stem almost naked, hispid at 



