n8 Introduction to Botany. 



2. Erigeron strigosus, Muhl. (L., strigosus, thin or narrow.) DAISY FLEA- 

 BANE. Resembling the preceding species, but smaller, and the lower leaves oblong 

 or spatulate, and tapering into a slender petiole; upper leaves linear-oblong or 

 linear-lanceolate. Clothed with an appressed pubescence. Rays white, and twice 

 the length of the puberulent involucre. In fields. 



3. Erigeron bellidifolius, Muhl. (L., bellis, bellidis, the ox-eye daisy; folium, 

 leaf.) ROBIN'S PLANTAIN. Hairy perennial, producing stolons or offsets at the 

 base. Basal leaves tufted, obovate, or spatulate ; upper leaves few and distant, 

 anceolate-oblong, partly clasping. Heads i to 15 inches broad on slender pedun- 

 cles. Rays about 50, violet or purple. Pappus simple. Moist banks and copses. 



4. Erigeron Philadelphicus, L. COMMON FLEABANE. Hairy or nearly gla- 

 brous perennial, forming stolons or offsets at the base. Stems slender, i to 3 feet 

 high. Lower leaves obovate or spatulate, dentate, tapering to a short petiole. 

 Upper leaves oblong or lanceolate, clasping at the base. Rays 100 or more, light 

 rose-purple. Pappus simple. In fields and woods. 



II. ANTENNARIA. Everlasting. 



(Named from resemblance of the pappus to the antennae of some insects.) 



Flowers of the head many, dioecious, all tubular. Corolla of the 

 staminate flowers truncate and minutely dentate, the anthers caudate, 

 pappus scant, club-shaped, barbed, or smooth above. Pistillate flowers 

 with slender, tubular corolla and copious, capillary pappus, united 

 beneath to form a ring. Involucre white or colored, and dry, the 

 scales numerous and imbricated. Receptacle without chaff, and con- 

 vex or flat. Perennial herbs clothed with a white wool. Leaves 

 entire. 



i. Antennaria plantaginifolia, Richards. (L., plantago , plantain ; folium, leaf.) 

 PLANTAIN LEAF or MOUSE-EAR EVERLASTING. 3 to 18 inches high, spreading 

 by stolons. Young leaves softly woolly, becoming green above and hoary beneath. 

 Basal leaves petioled, obovate, or broadly spatulate, 3-nerved. Stem leaves lanceo- 

 late, appressed. Heads in corymbose clusters. Scales of the involucre white or 

 greenish white, imbricated in about 3 rows. In dry soil or open woods. 



III. ANTHEMIS. Chamomile. 



(The ancient Greek name of the chamomile.) 



Heads radiate on the margins ; ray flowers white or yellow, either 

 pistillate or neutral. Disk flowers yellow, perfect. Involucre hemi- 

 spheric, with bracts imbricated in several rows. Receptacle convex 

 and chaffy, at least near the summit. Pappus a minute crown or 

 wanting. Achenes oblong and ribbed. Strong-scented annual or 

 perennial herbs, with alternate, pinnatifid, or dissected leaves and 

 heads usually borne on long terminal peduncles. 



