LENTIBULACi;^.. (iJLADDKRWORT FAMILY.) 317 



8. CENTUNCULUS, L. Cuaffweed. 



Calyx 4-5-partcd. Corolla shorter than the ealyx, 4-5-cleft, wheel-shaped, 

 with an urn-shaped short ttilie, usually withering on the sununit of the pod 

 (whieh is like that of Aiiagallis). Stamens 4 or 5: lilaiiients beardless. — 

 Small annuals, with alternate entire leaves, and solitary inconspieuous flowers 

 in their axils. (Derivation obscure.) 



1 . C. minimus, L. Stems aseending (2' - 5' long) ; leaves ovate, obovatc, 

 or spatulate-oblong; flowers nearly sessile, the parts mostly in fours. (C. lan- 

 ccolatus, Miclix.) — Low grounds, Illinois and southward. (1-u.) 



9. SAMOLUS, L. Water Pimpernel. Brook-weed. 



Calyx o-eleft ; the tube adherent to the base of the ovary. Corolla somewhat 

 bell shaped, .'j-eleft, commonly with 5 sterile filaments in the sinuses. True 

 stamens 5, on the tube of the corolla, included. Pod 5-valved at the summit, 

 many-seeded. — Smooth herbs, with alternate entire leaves, and small white 

 flowers in racemes. (" According to Pliny, an ancient Druidical name.") 



1. S. Valerindi, L. Stem erect (6'- 12' high), leafy ; leaves obovate; 

 bracts none ; bractlcts on the middle of the slender aseending pedicels ; calyx- 

 lobes ovate, shorter than the corolla. (Eu.) 



Var. Americ^nus, Gray. More slender, becoming diffusely branched; 

 racemes often panidcd, the pedicels longer and spreading ; bractlets, flowers, 

 and pods smaller. (S. floribiindus, //. li. A'.) — Wet places : common. June- 

 Sept. 



10. HOTTONIA, L. Featiiekfoil. Water Violet. 



Calyx 5-parted, the divisions linear. Corolla salver-shaped, with a short 

 tube; the limb 5-parted. Stamens 5, included. Pod many-seeded, 5-valved; 

 the valves cohering at the base and summit. Seeds attached bv their b;ise, 

 anatropous. — Aquatic perennials, with the immersed leaves pectinate, and the 

 erect hollow flower-stems almost leafless. Flowers white or whitish, whorlcd at 

 the joints, forming a sort of interrupted raceme. (Named for Prof. Ilollun, a 

 botanist of Leyden, in the 17th century.) 



1. H, infl^ta, Ell. Leaves dis.seetcd into thread-like divisions, scattered 

 on the floating and rooting stems, and crowded at the base of the duster of pe- 

 duncles, which are strongly inflated between the joints (odffu as thick as one's 

 finger) ; pedicels short. — Pools and ditches, New England to Kentucky, and 

 southward. June - Aug. 



Order G5. LENTIBIIL.4CE.£. (BLADni-uwoRT Fa.mily.) 



Small herbs (fjroirhif/ in water or wcl places), wilh n 2-lij>pe(l cali/x, ami a 

 2-lipped personate corolla, 2 stamens tcilk (con/luentli/) one-celled anthers, 

 and a one-celled ovary with a free central placenta, hearing several anatro- 

 pous seeds, wilh a thick straiijht endirf/o, and no albumen. — Corolla <leenly 

 2-lipped, spurred at the base in front ; the palate visually beai-ded. Ovary 



