88 



CEPHELANTHUS— CHELONEL 



spikes, woolly, bracted; leaves decirrent, 

 tootlied, spiny. Ex. 



ni'grn, (black knapweed, p. An. 2^.) 

 lower leaves angular-ljTate, upper ones 

 ovate ; scales of the involucre ovate, cilia- 

 ted with capillary teeth. 2 f. Ex. 



scabio'Ra, (scabrous centaury, 2^.) leaves 

 pinnatifid, rougbish ; divisions lanceolate, 

 spreadiuiT, acute-pinnatifid at tlie base ; in- 

 volucre ciliate. -Ex. 



suaveo'lcnn, (yelknv sultana, %.) leaves 

 lyrate-pinnatifid ; involucre smooth. Ex. 



moschn'tn, (sweet sultana, %.) leaves 

 slightly pinnatifid; lower divisions mostly 

 entire ; involucre smooth. Ex. 



CENTAUREL"LA. 4—1. {GcntianecR.) 



panicnla'tn, (Sept. 0.) stem branched, 

 smooth ; peduncles opposite ; leaves mi- 

 nute, subulate ; flowers in panicles. Damp 

 grounds. Flowers small, greenish-white. 

 4-8 i. 



ve/'na, (w. M-r. 0.) stem simple, few- 

 flowered ; corolla thrice as long as the 

 calyx ; style as long as the germ. 4-8. S. 



CEPHALAN"THUS. 4—1. (Ruhaca.) [From 

 kephale, head, anthos, flower.] 

 occideuta'lis, (button bush, w. Ju. ^.) 

 leaves opposite, and in threes, oval, acu- 

 minate; inflorescence a round head. 

 Swamps. Var. pubes''cens,\ias the leaves 

 and the branchlets pubescent. 4-5 f. 

 CERATIO'LA. 20—2. (Euphorbecc.) 



encoi'deif, (Au. ^ .) branchlets sub-tomen- 

 tose ; leaves whorled, naiTow, linear, 

 smooth. An evergi-een shrub. 4-6 f. 

 CERAN"THERA. J3— 1. {Labiatcm.) [From 

 keras, horn, and anfAos, flower ; anthers bear- 

 ing horns.] 



linearifu'lia, leaves opposite, lineai*, some- 

 times clustered; stem glabrous, branching; 

 racemes terminal ; peduncles opposite. 12 i. 

 CERAS"TIUM. 10—5. (Caryophyllea.) [From 

 keras, horn, alluding to the form of its cap- 

 sule.] 



vulga'tum, (mouse-ear, duckweed, w. 

 Ap. %.) hirsute, viscid, cespitose ; leaves 

 ovate ; petals oblong, about equal to the 

 calyx; flowers longer than the peduncle. 

 6-10 i. 



visco'sum, (sticky chickweed, w. J. @.) 

 hairy and viscid, spreading ; leaves oblong- 

 lanceolate ; flowers somewhat panicled, 

 shorter than the pedicels. 4-6 i. 



nu'tans, (w. J. 0.) viscid and elongated ; 

 stems erect, deeply striate; leaves elon 

 gated, distant, linear-oblong, acute ; petals 

 oblong, bifid at the tip, longer than the ca 

 lyx; peduncles much longer than the flow- 

 ers. 6-12 i. 



oblongifo'lium, (w. J. 2i.) cespitose ; pu- 

 be.scent ; stem erect, terete, even ; leaves 

 lanceolate-oblong, rather acute, shorter than 

 the joints ; flowers terminal, shorter than 

 the pedicels; petals obovate, bifid at the 

 tip, twice the length of the calyx. 6-12 i. 

 CERAS"US. {See Pru'nus.) 



CERATOPHYL"LUM. 19—12. {Onagrff.) 

 [Named from the horned divisions of the 

 leaves.] 



demer'sum, (homwert, Ju. 2^.) fruit arm- 

 ed with 3 spines ; stem long, slender ; leaves 



verticillate in 8 ; flowers axillary, solitary 

 very minute. 



subm€)-"sHm, (Z^.) leaves dichotomous in 

 three pairs; fruit without spines. In water. 

 CER"CIS. 10—1. (LeguminoscE.) 



canaden"sis, (red-bud, judas-tree, r. M. 

 ^.) leaves round heart-tbnn, acuminate, 

 vi]lo.s^at the axils of the nerves; stipules 

 minute ; legumes short-stiped. Var. jnibes"- 

 cells, has roundish, acute leaves, pubescent 

 beneath. 15-30 f. 

 CETRA'RIA. 21—5. (Algce.) [From ceira, 



a buckler.] 



island"ica, (the Iceland lichen, Iceland 

 moss,) frond olive-chestnut- brown, at the 

 base redd i-sh- white, white beneath ; divis- 

 ions erectish, sub-linear, many-cleft, chan- 

 nelled, tooth-ciliate, the fertile ones dilated; 

 receptacles close-pressed, flat, 1-colored; 

 margin frond-like, elevated, entire. On 

 sandy plains, as on the bairen plains near 

 Beaver pond, in New Haven, where it cov- 

 ers tlie earth very densely in many places. 

 CHAM^'ROPS. 6—3. (PalmcE.) [From 



chamai, on the ground, ops, appearing.] 



serrula'ta, (E.Ju. Tp.) caudex creeping , 

 stipes sharply serrate ; fronds plaited, pal- 

 mate. Fronds 2 f. S. 



palmef'to, (Ju. ^ .) caudex arborescent ; 

 stipes unarmed ; spathes doubled ; fronds 

 plaited.paknate ; fronds 5-6 f. Florida. 

 CHA'RA. 19—1. (Naiades.) [From chairo, 



to rejoice, because it delights in water.] 



vulga'Hs, (feather-beds, Ju. @.) stem and 

 branches naked at the base ; branches te- 

 rete, the joints leafy ; leaves oblong, subu- 

 late ; bracts shorter than the berry. Gi'ows 

 in ponds and ditches. 



Jiex"ilis, (Au. @.) stem translucent, na- 

 ked; branchlets jointless, leafless, com- 

 pressed ; berries lateral, naked. 

 CHEIRAN"THUS. 14—2. {Crucifera.) [From 



cheir, hand, anthos, flower, the blossoms re- 

 sembling the fingers.] 



chei'ri, (wall-flower, J. 2^.) leaves lance- 

 olate, acute, glabrous ; branches angled , 

 stem somewhat of a woody texture. Ex. 



an"nuus, (stock july-flower, Ju. %.) leaves 

 lanceolate, sub-dentate, obtuse, hoary; si- 

 lique cylindric, with an acute apex. Ex. 



pallas"n, [v. Ju. $ .) stem simple, terete, 

 somewhat glabrous; leaves glabrous, lan- 

 ceolate-linear, tapering, repand-toothed. 



inca'nus, (brompton stock, $ .) leaves 

 lanceolate, entire, obtu-se, hoaiy, silique 

 truncate, compressed at apex. Stem 

 somewhat of a woody texture. Ex. 

 CHELIDO'NIUM. 12—1. (Papaveracece.) [From 



chelidon, a swallow, because it blossoms 



about the time tliis bird appears.] 



ina'jus, (celandine, y. M. 2^.) umbels ax- 

 .illary, peduncled ; leaves alternate, pinnate, 

 lobed. Naturalized. 

 CHELO'NE. 13—2 (Bignonia:.) [From c/tc- 



lone, a tortoise.] 



gla'bra, (snake-head, w. and r. Ju. 2/.) 

 leaves opposite, lance-oblong, acuminate, 

 serrate ; spikes terminal, dense-flowered. 

 Var.a/"&o,leaves sub-sessile ; flowers white. 

 Var. /»Mr;wVe«, leaves short-petioled ; flow- 

 ers purple. Var. lanceola'ta, leaves lanceo- 

 late, acuminate, serrate, sessile, pubescent 



