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PIQUERIA TRINERVIA. 'THREE-NERVED 
PIQUERIA. 
Class and Order. 
SyneenesiA Poryeamia AQuA.is. 
Generic Character. 
Recept. nudum. Cal. tetraphyllus equalis, quadriflorus. 
Pappus nullus. Sem. pentagona. 
Specific Character and Synonyms. 
PiguEria trinervia; herbacea, caule ramisque bifariam ° 
pilosis, foliis lanceolatis serratis glabris, corymbis ra- 
mosissimis, foliolis involucri (calycis) mucronatis. 
Kunth Syn. Pl. Aiquinoct. 2. p. 439. : 
Pigueria trineryia. Cav. ic. 3. p. 19. ¢. 235. Willd. Sp. 
Pl. 3. p. V7A8. Persoon Syn. 2. p. 397. Hort. Kew. 
ed. alt,4. p. 501. Encycl. Bot. Suppl. 4. p. 419. 
This plant belongs to the natural order of Composite, 
the Corymbifere of Jussrev, and appears to us, in habit at 
least, to be more nearly related to Eupatorrum than to any 
other genus; but the seeds are without pappus, and the 
calyx consists of four leaflets, equal in length. 
A biennial. Native of Mexico. Cultivated in the 
greenhouse. Introduced by the Marcuiongss or Burs, in 
1798. Flowers from June to August. ae 
Our drawing was taken in 1819, from a plant communi- 
cated by Mr. Anperson, from the late Mr. Vere’s garden, 
at Kensington Gore. cy 
