ft 



118 FIKST RECORDS OF BRITISH FLOWERING PLANTS. 



Zizii. The totally barren race, before mentioned, grows under 

 exceptionally favourable conditions for the production of flower- 

 spikes, yet I have never been able to find a single one. 



It would make this note too long to treat this subject from the 

 litems side of the question, and my observations are at present too 

 incomplete for this purpose. The cause of the tendency of Potamo- 

 geton to cross so frequently in the fenland, while hybrid forms are 

 so rare elsewhere, is a question which needs explanation, as, at 

 first sight, it seems to offer a serious objection to the validity of 

 much that I have urged in these notes. The explanation does not 

 seem difficult, and I hope to attempt to give it in a future note. 



FIEST RECORDS OF BRITISH FLOWERING PLANTS. 



COMPILED BY 



William A. Clarke, F.L.S. 



(Continued from p. 85.) 



Sisymbrium Thalianum Gay in Ann. Sc. Nat. vii. 399 (1826). 

 1634. "Ad agrorum margines." — Johns. Merc. Bot. 59. 



S. officinale Scop. PI. Carn. ed. 2, ii. 26 (1772). 1597. "In 

 stony places among rubbish by patkwaies," &c. — Ger. 198. 



S. Sophia L. Sp. PL 659 (1753). 1570. " Prope urbes . . . 

 Anglic. 7 — Lob. Adv. 329. 



S. Irio L. Sp. PL 659 (1753). 1666. " Ubique fere in 

 Suburbiis Lond. supra muros & juxta fossas." — Merrett, 66. 



S. Alliaria Scop. Fl. Carn. 2, ii. 26 (1772). 1538. " Passim 

 in sepibus." — Turn. Libellus. 



Erysimum cheiranthoides L. Sp. PI. 661 (1753). 1597. 



"Wilde in sundry places of England.'' — Ger. 213. "About one 

 mile from Redding."— How, Phyt. 19 (1650). 



Subularia aquatica L. Sp. PI. 642 (1758). 1692. "A 

 D. Sherard inventore ex Hibernia in Angliam nuperrime nobis 

 transmissa est." — Pluk. Phyt. 188, f. 5. " Lough Neagh . . . D. 

 Sherard/'— Ray, Syn. ii. 281 (1696). 



Brassica oleracea L. Sp. PL 667 (1753). 1548. " Groweth 

 in Dover cliffes, where as I have onely seene it in al my lyfe." 

 Turn. Names, B vj. 



B. Rapa L. Sp. PL 666 (1753). 1640. " I found going from 

 Shorditch by Bednal Greene to Hackney." — Park. Theatr. 864. 



B. monensis Huds. Fl. Angl. ii. 291 (1778). 1670. "We 

 found it plentifully, going from the Landing place at Ramsey (Isle 

 of Man) to the Town."— Ray, Cat. 103, 4. 



B. nigra Koch in Roehl. Deutschl. Fl. ed. 3, iv. 713 (1833). 

 1633. " On the bankes about the backe of Old-street, and in the 

 way to Islington." — Ger. em. 245. 



B. Sinapis Vis. Fl. Dalmatica, iii. 136 (1852). 1548. 



.. 



Groweth comunely among the corne." — Turn. Names, D viij. 



B. alba Boiss. Voy. ii. 89 (1845). 1633. "pn the banks 



