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514. RHINANTHUS. Gen. pl. 997. 1. R. corollarum labio superiore emarginato bidentato, la- Crista galli.

cinia media labii inferioris brevissima. IVilld. sp. pl.3.

p. 188. Icon. Schkuhr handb. 169. Fl. dan. 981. Engl. lot. 657. In fields and meadows: Lower Canada. 0. June, July. v.v.

Flowers yellow. R. virginicus. Vid. Gerardia & Pedicularis pallida.

pallida.

acuminata.

tenuifolia.

515. BARTSIA. Gen. pl. 996.
1. B. foliis alternis linearibus indivisis, superioribus lanceo-

laris, floralibus subovalibus summitate subdentatis,om-
Dibus 3-nervibus, dentibus calycis acutis.-Willd. sp.

pl. 3. p. 186. Mich. fl. amer. 2. p. 17.
Icon. Gmel. fl. sil;. 3. t. 42.
In Canada and Labrador. On the White-lills of New

Hampshire. Prof. Peck. 4. July. 7. s. in Herb.

Lambert. Flowers pale yellow; the floral leaves purple. 2. B. foliis alternis prælongo-linearibus, floralibus ovatis

longissime acuminatis 3-nervibus, omnibus indivisis,

Aoribus bracteis brevioribus, dentibus calycis acutis. On the north-west coast : Unalashka. 4. v. s. in

Herb. Lambert.
3. B. hirsutissima; foliis alternis linearibus inciso-pinnatifi-

dis : laciniis filiformibus, bracteis membranaceis ob-
longis obtusis basi utrinque hastato-unidentatis floribus
longioribus, calycibus brevibus pilosis, dentibus subu-

latis,
On the banks of Clarck's river. M. Lewis, 4. July.

v. s, in Herb, Lewis. About a foot high ; flowers

deep yellow, floral leaves tinged with purple.
4. B. foliis alternis linearibus inciso-pinnatifidis, laciniis li-

nearibus, bracteis dilatatis plerumque trifidis foribus
longioribus, dentibus calycis rotundato-oblusis.-

Willd. sp. pl. 3. p. 185.
Icon. Pluk. alm. t. 102. f.5. Moris, hist. 3. s. 11. t. 13.

f. 28.
a. B. bracteis coccineis.
B.B. bracteis lutescentibus. Rarior.
Io wet meadows : Canada to Florida. 8. 4. June,

July. v. v. Flowers yellow, involved in scarlet foral
leaves, which give this plant a very elegant ap-
pearance.

coccinea.

coccinea.

pallens. alpina. 5. B. foliis oppositis ovatis subcordatis obtuse-serratis rugo.

sis, antheris hirsutis.--Willd. sp. pl. 3. p. 187. Icon. Fl. dan. 43. Engl. lot. 561. Schkuhr handl. 163. In Labrador. Colmaster. 21. July.

v. s. in Herb. Dickson. Not above six inches high ; floral leaves similar to the stem leaves, purple ; flowers long, of a

fine deep purple. Gymnandra. 6. B. foliis suboppositis ovatis crenatis, binis radicalibus pe

tiolatis, spica oblonga, verticillis bracteatis coarctatis.

-Willd. sp. pl. 3. p. 186.
Gymnandra borealis. Pall. itin. 3. t. A. f. 1.
Lagotis glauca. Gært. art. petrop. 14. t. 18.
On the mouth of the river Columbia. M. Lewis. In

Unalashka. Herb. Pallas. 4. v. s. in Herb. Lewis.
nec non Lambert. About a span bigh; flowers pale
blue. This singular plant grows on the most unfertile
rocks, exposed to the most rigorous cold winds, in
places where vegetation seems entirely to cease.

officinalis.

516. EUPHRASIA. Gen. pl. 998. 1. E. foliis ovatis obtuse-dentatis, laciniis labii corollæ in

ferioris emarginatis. Willd. sp. pl. 3. p. 193. Icon. Fl. dan. 1037. Engl. loc. 1416. Sabb. horl. 3.

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latifolia.

In Canada. Michaụt. 0. July-Sept. v.s. Flowers

white, with purple veins. 2. E. foliis ovatis dentato-palmatis, floribus spicatis, corol

Jis tubulosis, laciniis labii inferioris obtusis. Willd. sp.

pl. 3. p. 192. Icon. Sabb. hort. 3.6.7. Moris. hist. 3. s. 11. t. 24. f. 8. In Labrador. Colmaster.

O. July v. s, in Herb. Dickson. Flowers smaller, pale purple.

lineare.

517. MELAMPYRUM. Gen. pl. 999. 1. M. gracile ; foliis inferioribus linearibus integris, florali.

bus lanceolatis postice dentatis, foribus axillaribus di

stinctis.- Lam. encycl. 4. p. 23. M. americanum. Mich. f. amer. 2. p. 16. In shady woods, particularly on the mountains : Canada

to Carolina. 0. July, Aug. v.v. Flowers yellow. virginica.

318. OBOLARIA. Gen. pl. 1044. 1. O. caule simplici, foliis oblongis truncatis carnosis subtus

purpureis, foribus axillaribus solitariis sessilibus.

Willd sp. pl. 3. p. 346.
Icon. Pluk alm. t. 209. f. 6. Moris. hist. 3. $. 12. t.16.

f. 23.
In shady rocky places : Pensylvania to Virginia; rare.

Not above three inches high ; flowers pale red, in a
spike, supported by purple bracteas.

519. OROBANCHE. Gen. pl. 1045. 1. O. caule ramoso, floribus alternis distantibus, corollis de. virginiana.

ciduis 4-dentatis.-Willd. sp. pl. 3. p. 351.
Icon. Moris. hist. 3. s. 12. t. 16. f. 9.
Parasitic on the roots of beech-trees : Canada to Georgia.

4. July-Sept. v. v. Flowers small, purple. This
plant is known by the name of Cancer-root, being
thought to be a never-failing remedy in cancerous

ulcers.
2. O. caule simplicissimo squamis ovali-lanceolatis imbrica-

americana, tis obtecto, spica terminali glabra, corollis recurvatis,

staminibus exertis.- Willd. sp. pl. 3. p. 351. Parasitic on the roots of trees : Pensylvania to Carolina.

4. July. v. y. About a span high, of a brownish

yellow colour. 3. O. scapis nudis unifloris, calyce ebracteato, corolla re- uniflora.

curvata.-Willd. sp. pl. 3. p. 352.
Icon. Pluk, mant. t. 348. f. 3.
Parasitic on the roots of different plants and shrubs : Ca.

nada to Virginia. 4. June, July. v. v. Not above
two or three inches high, of a tan colour ; Aowers
pale purple.

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* Silicula integra. 520. DRABA. Silicula integra, ovali-oblonga, valvis pla

niusculis dissepimento parallelis. 521. MYAGRUM. Silicula suberosa, evalvis, loculis fer

tilibus atque spuriis, sibi mutuo superimpositis. Sty

lus persistens. 522. CAKİLE. Silicula lanceolata, subtetragona, medio

utrinque dente instructa, biarticulata, ad articulos secedens : articulis monospermis, evalvibus.

** Silicula apice emarginata. 523. ALYSSUM. Filamenta quædam introrsum denticulo

notata. Silicula emarginata, plerumque pilosa. 524. CORONOPUS. Silicula reniformis, compressa, cor

rugata, loculis evalvibus monospermis. 525. LEPIDIUM. Silicula emarginata, cordata, polysper

ma : valvulis carinatis disse pimento contrariis. 526. THLASPI. Silicula emarginata, obcordata, poly

sperma : valvulis navicularibus, marginato-carinatis.

II. SILIQUOSA. * Calyx clausus, foliolis longitudinaliter conniventibus. 527. ERYSIMUM. Siliqua columnaris, tetraëdra. 528. CHEIRANTHUS. Silicula compressa. Stigma bi

lobum. Germen utrinque denticulo glandulato. 529. HESPERIS. Petala oblique flexa. Siliqun stricta.

Stigma basi bifurca apice connivente. Glandula in.

tra stamina breviora. 530. ARABIS. Silique compressæ.

Glandulæ nectari

feræ 4. singula intra calycis foliola, squamæ instar

reflexæ. 531. TURRITIS. Siliqua longissima, angulata, striata.

Cal. counivens, erectus. Petala erecia. 532. BRASSICA. Cal. erectus, connivens. Dissepimen

tum prominens. Sem. globosa. Glandula inter sta

mina breviora et calycem. Siliqua teres, rostrata. 533. DENTARIA. Siliqua elastice dissiliens, valvulis re

volutis. Dissepimentum subfungosum. Stigma emar-
ginatum. Cal. connivens.

** Calyr hians, foliolis superne distantibus. 534. CARDAMINE. Siliqua elastice dissiliens, valvulis

revolutis. Stigma integrum. 535. SISYMBRIUM. Siliqua rostro brevi tereti dehiscens, valvulis rectiusculis.

Corolla patens.
536. CLEOME. Glandulæ nectariferæ 3. ad singulum

sinum calycis singulæ, excepto infimo. Petnla omnia
adscendentia. Germen stipitatum. Siliqua l-locula-
ris, 2-valvis.

I. SILICULOS A.

520. DRABA, Gen. pl. 1076. 1. D. scapo nudo, foliis oblongis acutis subserratis birtis,

petalis bifidis, stigmate sessili.-Willd. sp. pl. 3.

verna.

p. 426.

hispidula.

Icon. Fl. dan. 983. Engl. bot. 586.
In cultivated grounds and old fields : Canada to Virginia.

0. March-May. v. v. All the species of this ge

nus are small plants with white flowers. 2. D. scapo nudo, foliis ovalibus acutis hirsutissimis, silicu.

lis longo-linearibus glabris approximatis.- Mich. f.

amer. 2. p. 28. D. caroliniana. Walt. fl. car. 174. In sandy fields : Virginia and Carolina, and on the banks

of the Missouri. 0. April - June. v.v.
3. D. scapo subunifolio adscendente, foliis lanceolatis inte-

gerrimis subtomentosis : pilis stellatis, petalis retusis.
-Willd. sp. pl. 3. p. 427.

nivalis.

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