14 MIDDLESEX FLORA. 



pointed tteth ; the involucral bracts abruptly acuminate to an acute 

 point, which reaches about one-third the length of the calyx.' 

 Wagner, Deutsche Flora. 

 D. barhatus, L. Sweet William. 

 Wilmington (F. S. Collins). Growing in a thicket, remote from 

 dwellings. June to July. Adv. from Eu. For description, see 

 Wood's Bot. & Fl. 



Saponaria, L. 



S. OFFICINALIS, L. SOAPWORT. BOUNCING BET. 



Kather common. July-Sept. Nat. from Eu. 

 S. Vaccaria, L. (Vaccaria vulgaris, Host., Man.) Cow Herb. 

 Lowell, " dumps" (Dr. C. W. Swan). Adv. from Eu. 



Gypsophila, L. 



*' Annual or perennial branching plants with entire, narrow leaves and 

 numerous, white or reddish flowers, Calyx bell-shaped, 5-toothed 

 or-cleft, without involucre at the base, with as many or three times 

 as many longitudinal nerves as teeth. Petals wedge-shaped, nar- 

 rowed in the claw, without scale. Caj)sule unilocular, opening with 

 4 teeth." Wagner, Deutsche Flora. 



G. muralis, L. 

 Escaped from gardens, Bedford and Dracut (Dr. C. W. Swan). 

 "A delicate plant with stiffly erect stems 1-5 in. high, forking; 

 flowers distant in an open panicle. Leaves linear, attenuate at both 

 ends. Petals rose red with dark veins." Wagner, Deutsche Flora. 



SiLENE, L. 



S. iNFLATA, Smith. Bladder Campion. 

 Common, at least in the eastern part of the county. June- July. 

 Nat. from Eu. 



S. Pennsylvanica, Michx. Wild Pink. 

 Not uncommon. May-June. 



S. Armeria, L. Sweet William Catchfly. 

 Reading (W. H. Manning) ; Medford (G. E. Davenport) ; Concord 

 (Minot Pratt). Escaped from gardens. July. Adv. from Eu. 



S. antirrhina, L. Sleepy Catchfly. 

 Medford, Lowell, Billerica, et al. Not uncommon. May-July. 



S. quinquevulnera, L. 

 Reading, escaped (W. H. Manning). Adv. from Eu. For descrip- 

 tion, see Wood's Bot. & Fl. 



S. NOCTIFLORA, L. NiGHT-PLOWERING CATCHFLY. 



Maiden, Reading, Lowell, Ashland, et al. Widely distributed, but 

 not very common. The Silene nocturna of Bigelow's Fl. Bost., and 

 of Dewey's Report was probably this plant. June-Aug. Nat. from 

 Eu. 



