$ SYNGENESIA, 
635. SOLIDAGO. Recept. nudum, punctis exaratum. 
Pappus simplex. Cor. radii circiter 5, (flavae). Cal. 
squamae imbricata, clausae. 
636. ASTER. Recept. nudum, scrobiculatum. Pappus — 
pilosus. Cor. radii plures, sæpius 10. (aut pauciores, 
colorati). (ai. imbricati squamz inferiores patulae. 
637. DONIA. Recept. nudum, favosum. Pappus 3-4- 
aristatus, deciduus. Cor. radii plures (30--35 flavi), 
Cal. hemispharicus, imbricatus : squamis interioribus 
cartilagineis, coloratis, : 
638. BCEBERA Recept. nudum. Pappus pilosus. Cal, 
duplex : exterior polyphyllus, interior octophyllus. 
639. ACIINELLA. Recept. nudum. Pappus polyphyllus 
(4—6), paleaceo-aristatus. — Cal. polyphyllus, æ- 
ualis. ~ SUL 
640. HELENTUM. Recept. nudum : radii paleaceum. Pop- 
pus 5-aristatus. Cor. radiis 3-fidis. Cal. simplex, 
multi partitus. s 
641. BOLTONIA. Recept. favosum. Pappus dentato- 
: aristatus : aristis duabus oppositis interdum elongatis, 
5 Cor, radii plurima. Cal. imbricatus. _ 
642. SIEGESBECKIA. Recept. paleaceum. Pappus 
nullus. Radius dimidiatus. Cal. exterior 5-phyllus, 
proprius patens." Sem.sub-4-gona. -  — ` 
643. PHÆTHUSA. Recept. paleaceum. Pappus nullus: 
Flo«culi radii L—3. Cal. imbricatus. Sem. hispida. 
644. ECLIPTA. Recept. paleaceum, Pappus nullus. Cor, 
disci 4-fidæ. Sem, subcompresso-marginata, obsolete 
2-3-dentata. ; 
645. ANTHEMIS. Recept. paleaceum : paleis planis, apice 
acuminatis, rigidis, - Pappus nullus s. margo tem- 
branaceus. Flores radii plures quam 5. Cal. he-. 
mispharicus, subequalis. — Hie 
646. ACHILLEA. Recept. paleaceum. Pappus nullus. - 
.. Pose. radii ciréiter 5., dilatati. Cal, ovatus, imbri- 
5 Catus. (Flores corymbosi.) |— ^ — Ad di pg 
647. TETRAGONOTHECA. Recept. paleaceum, Pap- 
ue nullus, Cal. monophyllus, 4-gonus, 4-partitus, - 
E IssiImus, | ye ewige tos imt 4 
648. HELIOPSIS. Recept. paleaceum, conicum, Pappus - 
nullus, Cor. radii lineares, mag 
tera, presertim radii, marginata, 
E 
