OECAND. PENTAGYN. \4?> 



Much resembling the last, but a larger, coarser and spreading- plant, 

 with longer and narrower leaves and flowers, shorter than their 

 footstalks in general, and especially in fruit. Petals bifid at the ex- 

 tremity. 



3. C. semidecandrum (small Mouse-ear Chickweed), hairy vis- 

 cid suberect, leaves oblongo-ovate, flowers somewhat panic-led 

 shorter than their pedicels, stam. 5, petals but slightly notched. 

 Lig/ilf. p. 241. E. B. t. 1630. C. pumilum, Curt. Lond. 

 ed. 1. 



HAB. Hills about Arthur's Seat, Dr. Parsons. Walls about the King's 

 Park, Edinb., Maugh. Ft. May. Q 



No author seems to doubt this being a good species, yet I know not 

 what character of importance can be found. All agree that the number 

 of f> stam. is not constant : and then, except in the less deeply notch- 

 ed and perhaps rather shorter petals, and its annual root, I do not 

 see how it is to be'distinguished from C.viscosum. 



4. C. tetrundrum (tetrandrous Chickweed), "hairy subviscid, 

 flowers qnadrifid tetrandrous, petals bifid shorter than the cal." 

 (Sm.) E. B. 1. 16(> (Saginacerastotdes). 



HAB. Sandy shores and rocks about the Firth of Forth, Diclcson. Wall 

 tops, near Edinb., Mr. Arnott. Angus-shire coast, G. Don. Isle of 

 May, abundant, 1). Don. Fl. May, June. Q- 



''Stems prostrate, dichotomous, hairy in the upper part. Leaves spa- 

 thulate or obovate, recurved. Flowers solitary, on longish footstalks 

 from each division of the stem, which footstalks as the fruit ripens 

 become reflexed. Petals cloven, white. Caps, with 8 teeth." Sm, 

 in E. Bot. " Caps, scarcely longer than the cal." Curt'u*. 



* y " Petals longer than the calyx. 



5. C. arvense (Field Cluckweed}, leaves linear-lanceolate more 

 or less pubescent especially at the base, petals twice as long as 

 the cal. Lightf. p.24\. E. B. t. 93. 



HAD. Dry gravelly pastures, but not common. Foot of walls near 



a The three individuals, C. semidecandrum, C.pumilnm of Dicks, and Curt, 

 and C. tetrandrum, are all met with in the vicinity of Yarmouth ; and I find 

 the following observations which were made some years ago by Mr. Turner 

 and myself upon recent specimens. C. semidecandrnm differs from C. puml- 

 lum almost solely in the larger size of the petals of the latter, in proportion 

 to its calyx. In the seed-vessel and seeds there is no distinction. C. tetran- 

 drum varies with 5 stam. and as many calycine leaves ; and when this is the 

 case, there is no means of distinguishing it from C. semidec., but by its 

 smaller size, more upright mode of growth and yellower colour; circum- 

 stances undoubtedly not much to be depended on. Sir James Smith's figure 

 in E. B. agrees neither with our specimens, nor with Curtis's representation, 

 nor with his own specimens preserved in Mr. Turner's Herbarium. The size 

 of the petals in our plants is intermediate between C. sein'-dscandrum and 

 pumilum, and when it has 5 stam. and petals, it seems formed to unite the 

 three individuals under consideration. 



