AND GENERA OF PLANTS. 449 
Tribe Euvparoriace2. 
*HELOGYNE. 
Capitulum homogamous, many-flowered. Involucrum subcampanulate, imbri- 
cate; sepals foliaceous, unequal, about eight, the inner scariose. Receptacle 
naked. Corolla tubular, equal, glandular, the apex shortly five-toothed and 
closed. Branches of the stigma connivent, clavate, very large, obtusely 
rounded, exserted, smooth and glutinous. Achenium slenderly obconic, - 
pentangular, smooth, with a basilar cicatrice. Pappus plumose, short, about 
the length of the achenium; the rays about twenty.—An annual? plant of 
Peru, hirsutely pubescent and glandular. Leaves alternate, cuneate-oblong, 
sessile, entire, or toothed at the apex. Capituli terminal, sessile. Flowers 
whitish, or ochroleucous. It appears to have some affinity with Agrian- 
thus, but the aspect of the involucrum is that of Apalus. It is bitter to the 
taste.—(The name from yos, a nail, or stud, and yun, a Female; in allusion 
to the remarkable form of the stigma.) 
HeEtocyne * Apaloidea. 
Has. In Peru, towards Arequipa; (Mr. Curson.) My specimen is only a branch, eovered, as 
well as the leaves, with short scaly hairs, more or less glutinous: many of the leaves are entire, a 
few of the larger have a blunt tooth on either side, towards the summit. Capituli fastigiate, ter- 
minal, and sessile, rather large, about twelve-flowered. Involucrum of about eight leaves, four or 
five larger, external, oblong, or oblong-ovate, very similar to the leaves, and equally pubescent, 
the inner narrower and scariose or membranous, all rather obtuse. Receptacle small. Corolla 
slenderly and equally tubular, glandular, about twice the length of the pappus; the teeth of the 
border very shallow and obtuse. Anthers small and closely included, not bisetose. Stigmas very 
large and conspicuous, brownish and glutinous, the extremities rounded in a clavate form, each 
summit wider than the whole corolla. 
Tribe ASTEROIDE®. 
Subtribe BaccHaripE£.—Division ConyzExz. 
* PARASTREPHIA. 
Capitulum many-flowered, heterogamous; the radial five-toothed tubular 
florets masculine! discal florets filiform, oblique, two-toothed, feminine. 
Stigmas equally filiform, exserted. Involucrum imbricated in about two 
vil.—5 N 
