CL. XXI.] MONffiCIA TETBANDRIA. 359 



Seed one, naked, egg-shaped, somewhat compressed, polished, 

 embraced by the permanent calyx. Name from uro, to burn. 429. 



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 several parts of England, but 

 rare. First distinguished as British by Mr. Babington, in Annals of Natu- 

 ral History, vol.i. p. 197. 1350. 



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

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

 lar heads; seeds with rough tubercles on their surface. Stems erect, 



bluntly four-cornered : leaves larger than in the preceding, and on longer 

 and thicker stalks : stipules between oblong and egg-shaped, broader 

 than in the preceding : seed dark-brown, with numerous darker promi- 

 nent points. Perennial : flowers in J une and July : grows in waste 

 ground, chiefly near the sea : rare. Norfolk and Suffolk. Eng. Bt. 

 pi. 148. Eng. Fl. vol. iv. p. 134. 1351. 



3. U. itrens. 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. xviii. pi. 1236. Eng. Fi. 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 ro%v. 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 three-lobed, with as many cells and 

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

 caulos, a stem. 430. 



1. E. ieptanguldre. Jointed Pipewwt. 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, globular, white head. Perennial : flowers in 

 September: grows in several lakes in the islands of Skve and Coll. Eng. 

 Bot. vol. xi. pi. 733. Eng. Ft. vol. iv. p. 140. 1354. 



