75 Erigeron acris L. _Blue Fleabane_ 288 75 Erigeron salsuginosus (Rich.) A. Gray. _Large Purple Fleabane_ 288 75 Saussurea densa Hook. _Saussurea_ 288 76 Erigeron discoideus Rydb. _Cut-Leaved Fleabane_ 292 76 Erigeron melanocephalus A. Nelson. _Black-Headed Fleabane_ 292 76 Erigeron multifidus Rydb. _Cut-Leaved Fleabane_ 292 77 Aster Lindleyanus T. & G. _Aster Lindleyanus 298 78 Erigeron aureus Greene. _Golden Fleabane_ 302 78 Gaillardia aristata Pursh. _Great-Flowered Gaillardia_ 302 79 Arnica cordifolia Hook. _Heart-Leaved Arnica_ 304 79 Arnica louiseana Farr. _Pale-Flowered Arnica_ 304 GLOSSARY ACAULESCENT: with stem so short that leaves appear to arise directly from root. ACHENE: a small, dry, one-seeded indehiscent, seed-like fruit. ACUMINATE: tapering gradually to a point. ACUTE: with an abrupt point. ADNATE: growing together as the stamens with the petals, or the anthers with the filament. ALTERNATE: (leaves) not opposite but arising at different points on the stem. Stamens are alternate with petals when they are situated in the intervals. ANTHER: the part of the stamen which contains the pollen. APICAL: pertaining to the top or apex. AURICULATE: with ear-like appendages at base. AXIAL: pertaining to an axis. BILABIATE: two-lipped. BLADE: the expanded portion of a leaf. BRACT: a modified and usually small leaf at the base of a flower or flower-cluster. In the latter case it is usually associated with others. BRACTEOLATE: furnished with small bracts.