CL. V.] PENTANDRIA MONOGYNIA. 115 



June and July : grows in marshy places and ditches : common. 

 Eng. Bot. vol. xxviii. pi. 1973. Eng. Fl. vol. i. p. 250. 285. 



2. M. ccespitosa. Tufted Water Scorpion-grass. Calyx funnel- 

 shaped, with broad, spreading segments ; leaves covered with 



erect bristles ; root fibrous. Stems about a foot high, rooting at 



the base : corolla paler and smaller than in the last species : the 

 whole plant weaker. Perennial : flowers in June and July .- 

 grows in watery places: common. Eng. Bot. Suppl. pi. 2661. 

 Eng. Fl. vol. i. p. 251. 286. 



3. M. alpes'tris. Eock Scorpion-grass. Calyx deeply five- cleft, 

 covered with erect hairs ; leaves hairy, root-leaves half the length 



of the stalks ; "root fibrous. Stems from three to five inches 



high : clusters dense : corolla large and blue. Perennial : flowers 

 in July and August : grows on Ben Lawers and other Highland 

 mountains : rare. Eng. Bot. vol. xxxvi. pi. 2559. Eng. Fl. vol. i. 

 p. 253. 287. 



4. M. sylvdtica. Wood Scorpion-grass. Fruit smooth ; calyx 

 deeply five-cleft, with spreading hooked bristles, when in fruit 

 egg-shaped, shorter than the spreading flower-stalks ; limb of the 

 corolla flat, longer than the tube ; root-leaves on short dilated 



stalks. Perennial : flowers in June and July : grows in dry 



shady places : common. Eng. Bot. Suppl. pi. 2630. Brit. Fl. 

 4th ed. p. 91. 288. 



5. M. arvensis. Common Field Scorpion-grass. Fruit smooth ; 

 calyx cleft half-way, with spreading hooked bristles, when in fruit 

 egg-shaped, shorter than the spreading flower-stalks ; limb of the 



corolla concave, equal in length to the tube. Annual : flowers 



through the summer and part of autumn : grows in cultivated 

 ground, and in general in loose soil : common. Eng. Bot. Suppl. 

 pi. 2629. Brit. Fl. p. 91. 289. 



6. M. collina. Early Field Scorpion-grass. Fruit smooth ; calyx 

 deeply cleft, with spreading hooked bristles, when in fruit bulging 

 at the base, open, equal in length to the spreading flower- stalks ; 

 limb of the corolla concave, shorter than the tube ; one remote 



axillar flower .Annual : flowers in April and May : grows in 



dry pastures, sandy or gravelly open soil, and on wall tops : com- 

 mon. Eng. Bot. Suppl. pi. 2629. 290. 



7. M. versicolor. Yellow and Blue Scorpion -grass. Calyx deeply 

 five-cleft, covered with spreading hairs ; leaves narrow, oblong, 



hairy ; clusters long, stalked, without a remote flower. Root 



fibrous : stem three or four inches high : corolla small, blue with 

 a yellow throat. Annual : flowers in June and July : grows in 

 dry waste places, on walls, &c. : common. Eng. Bot. pi. 480. fig. 

 1. Eng. Fl. vol. i. p. 254. 291. 



2. LITHOSPE'RMUM. GROMWELL. 



Calyx inferior, of one leaf, oblong, deeply five -cleft ; seg- 

 ments acute, equal, nearly erect. Corolla of one petal, funnel- 

 shaped; tube open. Filaments very short 5 anthers oblong, 

 concealed in the tube. Germens four. Style thread-shaped, 

 shorter than the tube ; stigma obtuse, notched. Seeds four, 

 egg-shaped, pointed, hard. Named from lithos, a stone, and 

 sperma, seed. 87. 



1. L. officindle. Common Gromwell. Graymill. Corolla little 

 longer than the calyx ; leaves lance-shaped, rather acute. Root 



