Order TO.— ASTERWORTS. 219 



M. re 'pens. Common in woods. Leaves round-ovate. Flowers white or pinkish. 

 Berries red, remaining througli the winter, 



2. liOUSTO'NIA. Bluets. 



Calyx tube round egg-shaped, 4-cleft, persistent. Corolla tubular, much 

 exceeding the calyx, limb 4-lobed, spreading, filaments 4, on the corolla. 

 Style 1. Capsule 2-lobed, half-free. — Herbs. Stipules connected to th 

 petiole. Flowers never yellow. 



§ Corolla .'^alver-form, glabrous. Pedunelos 1-flowered a 



§ Corolla funnel-form. Peduncles many-flowered, cyinou3....b 

 a Flowers terminal. Small, delicate herbs....!, 2 

 a Flowers axillary. Small, delicate herbs. . . .3, 4 

 b Leaves lance-ovate. Cymes terminal.. ..5 

 b Leaves lance-linear. Cymes terminal. . . .0, 7. 



1 H. coeru'lea. Dxcarf PiTik. Stems very numerous, upright, S-G'. Eoot leaves 



ovate- spatulate. Flowers pale blue. May^ June. 



2 H. serpyllifo'lia. Thyme-Uaxied B. Stems thread- form, decumbent, 6-12'. Leaves 



round-ovate, petiolate, fringed. Flowers on long stalks, pale. S, 



3 H. minima. Tiny B. Leaves linear-spatulate. Stems 1-3' high. Prairies. 



4 H. rotundifo'lia. Round-leaved B. Lvs. roundish. Stems 2-5'. S. Mts. 



5 H. purpu'rea. Prairie Innocence. Stems upright, much branched, If., with numer- 

 ous clusters of roseate or white, very delicate flowers. W. S. 



6 H. loiigifo'lia. Long-leaved I. Stems 4-10', erect. Leaves oval-elliptic, 



narrowed to end. 



7 H. angustifo'lia. Narrow-leaved I. Stems l-2f. erect. Lvs. linear. Flowers 



numerous. "W. S. 



Order LXX.— COMPOS'IT.E. Asterworts. 



An immense family of lierhs or shrubby plants, with comjio.und Jloicers, 

 that is, the Jiowers {or florets) collected into close heads upon a common 

 receptacle, and surrounded by an involucre of many bracts (called scales), 

 with 5 stamens which have their anthers united into a tube around the 

 style, with the calyx tube closely adhering to the 1-celled ovary (an aohe- 

 niuin in fruit), and the calyx limh crowning the ovary in tlie form of a 

 papp^is consisting of scales, awns, bristles, or hairs, or else entirely want- 

 ing; the corolla consisting of 5 united petals, eitlier strap-shaped (ligulate 

 or tubular, and the style 2-cleft at the top. 



In this Order the pupil will remember that the heads are called radiate, 

 when the outer florets only have rays or are Vigulate (see Fig. 498); radi- 



