662 
SYNGENESIA. 
Class XIX. 
1643. Rothia. Recept. villous, chafFy at edge. Invol. many-leaved, equal. Pappus hairy, of the disk sessile, 
of the ray none. 
1644. Krigia. Recept. naked. Pappus membranous, 5-leaved, with 5 bristles between. Invol. many-leaved, 
simple. 
1645. Hyoseris. Recept. naked. Invol. with bracteote. Pappus double : exterior capillary ; interior palea- 
ceous, awned. 
164S. Hedypnois. Recept. naked. Invol. with bracteolee. Pappus of disk double : outer obsolete, of many 
bristles ; inner paleaceous, 5-leaved ; of the ray a membranous toothletted margin. 
1647. Robertia. Invol. many-leaved, equal. Recept. scaly. Pappus feathery, the hairs being slightly mem- 
branous at base. 
1648. Seriola. Recept. paleaceous. Invol. simple. Pappus somewhat hairy. 
1649. Soldevilla. Invol. imbricated, in fruit ventricose at base, with scales conniving at end. Recept. palea- 
ceous ; pale£e very short, setose. Pappus O. 
1650. Hypochceris. Involucre oblong, imbricated. Receptacle chaffy. Pappus feathery, stipitate, or sessile. 
1651. Lapsana. Involucre with scales at the base. Receptacle naked (its inner leaves equal, channelled, 
Sm.) Pericarps destitute of pappus (deciduous). 
1652. Zacintha. Recept. naked. Pericarps of the ray incurved, of the disk straight. Pappus very short, 
somewhat feathery. Invol. with bracteolffi, which are membranous. 
1653. Rhagadioliis. Recept. naked. Pericarps arcuate, spreading. Pappus O. Invol. with bracteolee. 
1654. Moscaria. Invol. 6-leaved, equal. Recept. flat, paleaceous. External pericarps with a short feathery 
pappus ; central with none. 
1655. Catananche. Recept. paleaceous. In voL imbricated, scarious. Pappus paleaceous, 5-leaved ; paleas 
awned. 
1656. Triptilion. Invol. imbricated, the exterior scales somewhat squarrose. Florets bilabiate : the upper 
lip 3-toothed ; lower entire revolute. Recept. villous. Pappus with 3 feathers. 
1657. Cichorium. Involucre surrounded with scales or smaller leaflets. Receptacle naked or slightly hairy. 
Pappus sessile, scaly, shorter than the pericarp. 
1658. Bacaxia. Invol. imbricated, scarious. Florets, one in the middle large tubular ; the others 4-toothed, 
with a revolute bristle inserted in the mouth of the tube. Recept. pilose. Pappus feathery. 
1659. Scolymus. Receptacle paleaceous. Invol. imbricated, spiny. Pappus O. 
1660. Arctium. Involucre globose, each of its scales with an incurved hook at the extremity. Receptacle 
chaffy. Pappus simple. 
1661. Serratula. Involucre cylindrical, imbricated with scales that are not spinous. Receptacle chaffy. 
Pappus Foughish or feathery, rigid, persistent. 
166.2. Saussurea. Involucre imbricated, not spiny, outer scales acute, inner obtuse, membranous. Pappus 
feathery, in two rows, the exterior being shortest, the inner somewhat united at base. 
1653. Carduus. Involucre swelling, imbricated with spinous scales. Receptacle hairy. Pappus deciduous, 
roughish. 
1664. Silybum. Invol. ventricose, imbricated : outer leaves with appendages at end ; inner cochleate. 
Recept. chaffy. Pappus linear, chaffy, deciduous. 
1665. Cnicus. Involucre swelling, imbricated with spinous scales. Receptacle hairy. Pappus deciduous, 
feathery. 
1666. Onopordum. Involucre swelling, its scales spreading, and spinous. Receptacle cellular. Pappus deci- 
duous, rough. 
1667. Berardia. Invol. imbricated with linear unarmed scales. Recept. somewhat favose, naked. Pappus 
hairy, generally twisted spirally, persistent. 
1668. Cynara. Recept. setose. Invol. dilated, imbricated j scales fleshy, emarginate, with a point. Pappus 
sessile, feathery. 
1669. Carlina. Involucre swelhng : the exterior scales with numerous spines ; the inner ones colored, 
scariose. 
1670. Atractylis. Recept. paleaceous. Pappus feathery. Invol. imbricated with bracteolee. Florets of ray 
5-toothed. 
1671. Acarna. Recept. paleaceous. Pappus feathery. Invol. imbricated with bracteolae. Florets flos- 
culous. 
1672. Stolcesia. Recept. naked. Pappus with 4 bristles. Invol. leafy, somewhat imbricated. Heads radiated j 
florets of ray funnel-shaped, irregular. 
1673. Stobcea. Invol. imbricated, with toothed spiny scales. Florets flosculous. Recept. hispid, favose. 
Pappus paleaceous. 
1674. Onobroma. Invol. ventricose: outer scales large, herbaceous, spiny, acuminate j inner coriaceous, 
unarmed. Recept. paleaceous. Pappus setaceous, rigid, unequal. 
1675. Carthamus. Recept. paleaceous, setose. Invol. ovate, imbricated ; scales ovate, leafy at end. Pappus 
paleaceous, hairy, or none. 
1676. Cardopatum. Invol. 6-8-fl. many-leaved, imbricated, the outer scales branched, spiny. Recept. palea- 
ceous, with long fascicled paleje. . Pericarps villous. 
1677. Stcchelina. Recept. with very short paleee. Pappus feathery. Anthers awned at base. Invol. hemis- 
pherical, imbricated. 
1678. Palofoxia. Invol. oblong, somewhat imbricated, 8 or many-leaved, many-flowered. Cor. flosculous, 
longer than calyx, with a 5-fld limb. Pappus chaffy. Receptacle naked. Fruit marginal, wrapped up in the 
involucre. 
1G79. Fteronia. Recept. paleaceous ; palea; many-parted. Pappus somewhat feathery. Invol. imbricated 
with keeled scales. 
1680. Fernonia. Recept. naked. Invol. ovate, imbricated. Pappus double : outer paleaceous ; inner 
capillary. 
1681. Ammohium. Invol. imbricated, colored, radiant. Anthers with 2 bristles at the base. Chaffs of 
receptacle distinct. Pappus a toothed edge. 
1682. Liatris. Recept. naked. Invol. oblong, imbricated. Pappus feathery. 
1683. Mikania. Recept. naked. Invol. 4-6-leaved, equal, 4 or 6-flowered. Pappus hairy. 
1684. Sparganophorus. Invol. subglobose, imbricated with unequal scales, recurved, spreading at end. 
Recept. naked. Pericarps crowned with a somewhat cartilaginous cup. 
1685. Eupatoriu7)i. Involucre imbricated, oblong. Florets few. Receptacle naked. Pappus rough. 
1686. Bumcrilia. Invol. many-parted, equal. Receptacle paleaceous. Florets bilabiate. Anthers spurred 
at base. Pai)pus feathery, sessile. 
1687. Ageratimi. Itecept. naked. Pappus with 5 somewhat-awned paleae. Invol. oblong in a double row. 
Corollas 4-5-fid. 
1688. Ccclestina. Invol. cylind. many-leaved, imbricated. Recept. convex, naked. Florets all tubular. 
Stigmas very long, spreading. Pericarps truncate, 5-cornered. Pappus a membranous rim. 
1689. Stcvia. Recept. naked. Pappus iraleaceous. Invol. cylindrical in a single row. 
1690. Ccphalophora. Recept. naked, liemisplierical. Pappus paleaceous, many-leaved. InvoL many-leaved, 
reflexed. 
1691. Amphhcpis. Invol. hemispherical, imbricated. Recept. flat, naked. Florets all tubular. Pericarps 
cylindrical, naked. Pappus hairy, deciduous. 
1692. Hymenopappus. Invol. many-leaved, spreading} scales ovate, colored. Recept. naked. Pappus 
many-leaved, i)aleaoeous. 
1693. Mclananthcra. Recept. paleaceous, convex. Invol. many-leaved, in a double row. Pappus of from 
2 to 18 rough bristles. Pericarps turbinate, angular. 
