136 DICOTYLEDONOUS. 



tenuate at the base, very acute at the summit, somewhat hairy, slightly cili- 

 ate ; peduncles trifid. Fruit villous, with white hooked hairs. 



White. % June — Aug. Damp shaded soils. 

 7. G. CiRC^ZANS. Stem erect, glabrous, sparingly branched. Leaves by 

 fours, ovate, obtuse, ciliate. Flowers alternate, usually solitary, peduncles 

 short. Fruit hispid with hooked hairs, nodding. 



White. % June — Aug. In shaded rich soils. 



Gents II. RUBIA. 



Calyx 4-toothed. Corolla campanulate 4-5 cleft. Stamens 



4-5. Berries 2, roundish and smooth, single seeded. 



Nuttall. 



1. R. Brownii. Stem hispid, decumbent. Leaves by fours, oval, pedun- 

 cles solitary, single flowered. Flowers yellow. Berries purple, smooth. 



In shady woods from Car. to Florida. Fursh. Madder. 



Order LXXV. COMPOSIT^E. 



Calyx united to the ovary, with the limb either wanting, or 



membranous, or divided into hair-like segments called pappus. 



Corolla ligulate, or tubular. Stamens 5, alternate with the 



teeth of the corolla. Anthers cohering into a cylinder. — 



Ovary inferior, l-celled. Style simple. Stigmas 2 distinct 



or united. Fruit an indehiscent dry pericarp, crowned with 



the limb of the calyx. Seeds solitary, erect ; albumen none. 



Flowers collected into dense heads, surrounded by an involucre. 



The obvious characteristics of this order, are its compound flowers, and the 

 union of the anthers. Herbs or shrubs, ieares without stipules. 



Sub-Order I. CICHORACE.E. 



Plants usually with a milky sap. Florets of the capitulum 

 all ligulate and perfect. 



(a.) Hawk-weed Tribe. Flowers yellow or purple. 



Genus I. HIERACIUM. 



Involucre imbricate ; receptacle naked ; pappus simple, 

 persistent, setaceous. Flowers yellow, solitary or corymbose, 

 perfect. 



1. H. Venosum. Stem herbaceous, glabrous towards the summit, hairy 

 at the base. Leaves all radical, ovate-oblong, little hairy on the upper sur- 

 face, entire, margins ciliate, with dark red veins. Flowers in corymbose 

 panicles ; involucre glabrous. Seed striate, receptacle, dot'ed. 



Veiny Hawkweed. 

 Yellow. '2|.. May — June. In shaded soils. 1-2 feet. 



2. H. Makianum. Stem erect, villous and scabrous, leafy; Leaves sessile, 

 obovate oblong, strigose, upper leaves small, lower ones denticulate. Flow- 

 ers in irregular panicles, involucre hispid, tomentose ; florets numerous. 



Yellow. % Aug.— Sept. Mountains. 2-4 feet. 



3. H. GronoviiS Stem leafy, erect, hairy, with a glandular pubescence. 

 Leavesfew near the base of the stem, ovate, sessile, ciliate, pubescent. Flow- 



