CL. XIX.] SYNGENESIA. 303 



shaped, with glandular serratures. Stems about two feet high, 



numerous, erect, downy, as well as the leaves : flowers bright- 

 yellow, very numerous : bracteas and segments of the calyx fringed 

 with black glands. Perennial : flowers in July : grows in woods 

 and thickets : frequent. Eng. Bot. vol. xvii. pi. 1156. Eng.Fl.vol. 

 iii. p. 328. 1102. 



10. H. pulchrum. Small Upright St. Johns-wort. Styles three ; 

 stem erect, round ; leaves heart-shaped, smooth, clasping the stem ; 



segments of the calyx egg-shaped, with glandular serratures. 



Stem about two feet high, panicled at the top. The whole plant 

 smooth. Petals bright -yellow, tipped externally with red, fringed 

 like the calyx, with black glands. Perennial: flowers in July : 

 grows in woods, on heaths, and in dry pastures : frequent. Eng. 

 Bot. vol. xviii. pi. 1227. Eng. Fl. vol. iii. p. 329. 1103. 



11. H. elodes. Marsh St. John's-wort. Styles three; stems pro- 

 cumbent, creeping, round ; leaves roundish, hairy ; segments of 



I the calyx obtuse, with glandular serratures. Stems about six 



inches long, branched at the base, prostrate, hairy, as are the leaves . 

 flowers pale-yellow. Perennial: flowers in July and August : grows 

 in boggv places: not common. Eng. Bot. pi. 109. Eng. Fl. vol. iii. 

 p. 330. 1104. 



CLASS XIX. SYNGENESIA. 



Plants bearing compound Flowers having their anthers 

 united into a tube. 



Order I. POLYGAMIA ^QUALIS. 



Florets all perfect, each having five stamens and one pistil, 

 and producing one seed. 



* All the corollas strap-shaped. 



10. HYPOCHCE'RIS. Receptacle chaffy. Seed-down feathery. 



Calyx oblong, imbricated. 

 12. CICHO'RIUM. Receptacle slightly chaffy. Seed-down chaffy, 



shorter than the seed. Calyx double. 

 9. CRE'PIS. Receptacle roughish. Seed-down simple. Calyx 



double ; the outer lax, tumid, deciduous. 

 8. HIERA'CIUM. Receptacle nearly naked, dotted. Seed-down 



simple, sessile. Calyx egg-shaped, imbricated. 

 7. APA'RGIA. Receptacle naked, dotted. Seed-down feathery, 



sessile, unequal. Calyx double ; the inner imbricated. 

 2. PI'CRIS. Receptacle naked. Seed-down feathery. Calyx 



double ; inner of equal leaves ; outer lax. 

 1. TRAGOPO'GON. Receptacle naked. Seed-down feathery, 



stalked. Calyx simple, of equal leaves in two rows. 

 6. LEO'NTODOK Receptacle naked. Seed-down feathery, stalked. 



Calyx nearly egg-shaped, imbricated. 



4. LACTTJ'CA. Receptacle naked. Seed-down simple, stalked. 



Calyx imbricated, simple, cylindrical ; scales membranous at 

 the margin. 



5. PRENA'NTHES. Receptacle naked. Seed-down simple, nearly 



sessile. Calyx double. Florets few. 



