CL. XXI,] MOISTCECIA TETRANDRIA. 359 



embraced by the permanent calyx Name from uro, to 

 burn. 420. 



1. U. Doddrtii. Dodart's Nettle. Leaves opposite, between egg- 

 shaped and lance-shaped, nearly entire ; fertile flowers in globular 



heads, stalked ; seed nearly smooth. Stems erect, cylindrical, 



hollow, two to three feet high : stipules small, narrowly lanceolate : 

 seed smooth and shining, brown, with numerous dark-purple dots. 

 Perennial : flowers in June and July : grows in waste ground in se- 

 veral parts of England, but rare. First distinguished as British by 

 Mr. Babington, in Annals of Natural History, vol.i. p. 197. 1350. 



2. U. pilulifera. Roman Nettle. Leaves opposite, broadly egg- 

 shaped or heart-shaped, coarsely toothed ; fertile flowers in stalked, 



flobular heads ; seeds with rough tubercles on their surface. 

 terns erect, bluntly four-cornered : leaves larger than in the pre- 

 ceding, and on longer and thicker stalks : stipules between oblong 

 and egg-shaped, broader than in the preceding : seed dark-brown, 

 with numerous darker prominent points. Perennial: flowers in 

 June and July : grows in waste ground, chiefly near the sea : rare. 

 Norfolk and Suffolk. Eng. Bot. pi. 148. Eng. Fl. voL iv. p. 134. 



1351. 



3. U. urens. Small Nettle. Leaves opposite, broadly elliptical, 



with about five longitudinal ribs ; clusters nearly simple. From 



one to two feet high, bright-green, with venomous stings. Annual : 

 flowers from June to October : grows in cultivated ground, and 

 waste places, Eng. Bot. vol. xviiL pi. 1236. Eng. Fl. voL iv. p. 

 134. 1352. 



4. U. dioica. Great Nettle. Leaves opposite, heart-shaped ; 



clusters much branched, in pairs, mostly dioecious. From two 



to four feet high, dull-green, with venomous stings. The fibres of 

 the stem may be used like hemp. The young leaves are boiled 

 along with oatmeal in the Hebrides. Perennial : flowers in July 

 and August : grows in waste places and by road-sides : common. 

 Eng. Bot. vol. xxv. pi. 1750. Eng. Fl. vol. iv. p. 135. 1353. 



11. ERIOCAU'LON. PIPEWORT. 



Flowers arranged in a compact scaly head. 



Barren Flower in the middle. Calyx none. Corolla of one 

 petal, with a cylindrical tube, the limb divided into four or six 

 segments, in a double row. Filaments four or six, thread- 

 shaped, erect ; anthers roundish, two-celled. 



Fertile Flowers in the circumference. Calyx none. Corolla 

 of four or six petals, in a double row. Germen superior, two- 

 or three-lobed. Style one, very short ; stigmas two or three, 

 awl-shaped. Capsule two- or tliree-lobed, with as many cells 

 and valves. Seeds solitary, globular. Name from erion, wool, 

 and caufos, a stem, 430. 



1. E. septanguldre. Jointed Pipewort. Stem seven-cornered, 

 -much longer than the compressed, cellular, taper-pointed leaves ; 

 outer scales without flowers, smooth, the inner scales and corolla 



fringed at the extremity. Roots of numerous long, white, 



jointed fibres : leaves forming a tuft, two or three inches long : 

 stalks slender, from six to ten inches long, with a solitary, glo- 

 bular, white head. Perennial : flowers in September : grows in 

 several lakes in the islands of Skye and Coll. Eng. Bot. vol. xi. pi. 

 733, Eng. FL vol. iv. p. 140. 1354. 



