LOP.ELIACE.B. (lobelia FA:MILy.) 253 



— Margins of fields, &c., Florida, and northward. Sept. (D — Stem 3° - 6° 

 high. Liiivcs .*3'-G' long, often hairy beneath. Flowers blue. 



2. M. Floridanum, DC. Smooth ; stem paniclcd above ; leaves all 

 pinnatiliil aiul toothed, with the terminal lobe larger and .S-angled, or the upper- 

 most laiu'oolate, sessile or clas])ing ; heads raeemose-panii-lcd ; flowers blue. — 

 Kich soil, Florida to Isortli Carolina. Aug. and Sept. — Stem 3° - 6° high. 



* * Pappus tawny. 



3. M. leucophaeum, DC Smoothish ; stem paniclcd above ; leaves 

 numerous, irregularly ])innatitid, with coarsely-toothed lobes ; the terminal lobe 

 3-anglcd, or in the upper leaves often linear and entire ; racemes panicled. — 

 Mountains of North Carolina. Sept. @ — Stem 3° - l:i° high. Leaves 6'- 

 12' long. Flowers pale blue. 



91. SONCHUS, L. 



Heads many-flowered. Scalesof the involucre imbricated. Receptacle naked. 

 Achenia compressed, ribbed, not beaked nor narrowed at the apex. Pappus of 

 copious soft white hairs. — Annuals. Leaves entire or pinuatifid. Pleads some- 

 what umbelled. Flowers yellow. 



1. S. oleraceus, L. Smooth ; stem branching ; leaves pinnatifid, with 

 spiny-toothed lobes, clasping; the lowest petioled ; achenia transversely rough- 

 ened. — Wa-ste places. Introduced. June -Aug. — Stem 1° - 2° high. 



2. S. asper, Vill. Smooth, or the upper part of the stem and peduncles 

 hispid ; leaves entire, clasping, fringed with weak spines ; the lowest oblong- 

 obovate, the upper lanceolate ; achenia smooth. — Fields, Florida, and north- 

 ward. June - Aujr. — Stem 2° - 3° hijih. 



Order 1?k T.01?EL.1ACE^. (Lobelia Family.) 



Chiefly herbs, with milky juice. Leaves alternate, without stipules. 

 Flowers irregular. — Calyx o-lobed, the tube adherent to the 2-celled 

 ovary. Corolla unequally 5-lobed, valvate in the bud ; the tube split on 

 one side to the base. Stamens 5, inserted on the calyx ; the anthers, and 

 commonly the filaments, united into a tube. Style solitary : stigma 2- 

 lobed, surrounded with a ring of hairs. Fruit baccate and indehiscent, or 

 capsular and 2-3-valved, many-seeded. Seeds anatropous. Embryo 

 straight in fleshy albumen. — Acrid poisonous plants. 



1. LOBELIA, L. Lobelia. 



Corolla bilabiate ; the upper lip small, erect or rcflexcd, 2-partcd, the lower 

 spreading, palmately 3-cleft ; the tube straigiit. Anthers, or a part of them, 

 bearded at the apex, curved. Capsule 2-eellcd, 2-valved at the apex, many- 

 seeded. — Stems erect. Leaves undivided; the serratures glandular Flowers 

 blue, white, or scarlet, in terminal racemes or spikes. 

 22 



