dunculis dichotbinis SubbiflöHs» sepalis linearibüs brevibus obtusis märgine membrana-
ceis, petalis calyce vix longioribus, capsulis ovatis obtusis cälycem sequantibiis (5-valvi-
bus?) DC;—Poir. Diet. v. 6. p . 362. De Cand. Prodr. v. 1. p. 411.
Hab. Canada. (Poiret.)
17. A. Ptirshianä; Paule dichotomo diffiisö, foliis övalibüs subaeütis, peduilCulis ab-
teriiis axillaribus solitariis eloligätis, calycibus äcütis, petalis longitudine calycis. De
Cand. Prodr. v. 1. p . 414.—A. thymifolia. Pursh, Fl. Am. v. 1. p. 318. (non Sibth.
tend Sm.)
Hab. Sea-shore of Labrador. Herb. Hanks. (Pursh.')
18. A. läteriflora ; ihinüte pubescens, cäule erecto gracili dichotPme ramösö, foliis ob-
longo-ellipticis obtusis ciliatis pätehtibus, pedünculis lateralibüs terminalibusque elongatis
bifloris, sepalis ellipticis obtusis enerviis corolla subdimidio brevioribus. (Tab. XXXVI.)
Sp. PI. p . 605. Pursh, Fl. Am. v. 1. p . 317. Bigel. Fl. Bost. ed. 2. p . 181. Goldie,
in Edin. Phil. Joum. v. 6. p . 327. Cham, et Schlecht, in Linrusa, v. 1. p. 57.
Hab. From the United States to lat. 60°, and from Hudson’s Bay to the Rocky Mountains in the woody
districts. Dr Richardson; -Drummond; and others. Unalaschka. (Dr. Fischer.)
Tab. XXXVI. Fig. 1, Flower; jig. 2, Sepal'; fig. -3, Stamen ; fig. 4, Pistil ; fig. 5, Leaf '.—magnified.
19. A. macrophylla; caule .gracili erecto dichotome ramoso, ‘foliis patentibus lanceo-
latis glabris basiapieeque acuminatis* pedunculo terminali 2-3-floro, sepalis ovatis acu-
minatissimis corolla capsulaque subrotunda mtilto longioribus.^-«. foldis angustioribus.
(Tab. XXXVII. A.)—ß. foliis brevioribus latioribusque. (Tab. XXXVII. B.)
Hab. a. North-West America, in shady woods; and ß. banks of the Saskatchawan. Douglas.—Habit of
the preceding, yet very distinct. Here the plant is wholly glabrous, the -leaves are acuminated at both
extremities, the sepals of the calyx are totally different, and longer than the corolla. I possess the same
plant from Kamtschatka, gathered by Wortnskiold.
Tab. XXXVII. A. Arenaria macrophylla, a.—B. var. ß.—Fig. 1, Flower, fully expanded; fig. % View of
the outside of the calyx and corolla ;.fig. 3, Stamen; fig. 4, Leaf;—all more less magnified.
20. A. peploides; glabra, 'foliis 'ovatis oblongfeVe 'acii'tis cärnosis, floribus subsolitaräs
breviter pe^unculatis, sepalis obtusis cöroÜam sübsequantibus.—Linn. Sp. PI. p. 605.
Engl. Bot. t. 189. Pursh, Fl. Am. v. 1. p. 317. Torrey, FI. o f Un. St. v. l . p. 453. Bigel.
Fl. Bost. ed. 2. p . 181. De Cand. Prodr. v. 1. p. 413. Rich, in Frankl. 1st Joum. ed. 2.
App. p. 18. Cham, et Schlecht, in Linnoea, v. -1. p . 57.—Adenarium peploides. Rafin. De
Gand. Prodr. v. 3. p . 366.—ß. major; foliis unciam longis.
Hab. Searshbres, everywhere.—ß. He Fuca’s Straits. Dr. Söotder.
9. MERCKIA. Fischer.
Cal. 5-sepalus, persistens. Cor. 5-petala, petalis unguiculatis, integns. Siam. 5, cum
petalis altemantia, filamentis subulato-filiformibus, äntheris medifixis subglobosis, loCtflis
appositis. Styli 3. Caps, sessilis inflata depresso-globosa umbilicata sulcata, imper-
fecte trilocularis, trivalvis, dissepimeritis bipartibilibus; spermophorum centrale basale
parvum liberum. Semina :nxunerosa minuta pyriformia, embryone uncinato peripherico
ex majori parte albumen ineludente, radicula hili^m spectante.—Herba debilis herbacea
efluso-coespitosa. Folia opposita suhpetiolata. Flores peduncidati, terminales et latérales, soïi-
tarii. Hab. ad littora maris in regionibus gircticis Asiçe orientalis et Americoe occidentalis.
Cham. et Schlecht.
1. M. physodés. Fisch. MSS.—Cham. et Schlecht. in Linnæa, v. 1. p . 59.—Arenaria
physodes. De Çand. Prodr. v.,1. p. 413.
Hab. Frequent oa the sandy sea-shorjes of the Bay of Esçhscholtz. Chamisso.—l am indebted to Dr.
Fischer and Dr. Chamisso for specimens of this plant.
CERASTIUM. Lim.
Cal. 5-partitus. Pet. 5, bifida. Siam. 10. Styli 5. Caps. 1-locularis, cylindrica aut
globosa, apice dehiscens, dentibus 10, cirçïnatis aut adscendentibus. DC.
Sect. I . Strephodon. Ser,
1. C. stellarioides; caule erëcto didhotomo ramoso subtrifloro foliisque glabris oblongis
acuminatis, pedicellis 1-floris terminalibus, sepalis lanceolatis, petalis semibifidis calyce
duplo longioribus. DC.—(‘ Moc. PI. Nutk. Ic. ined.” De Cand. Prodr. v. 1. p. 415.
Hab. About Nootka Sound. (De Cand.)
Sect. I I . -Orthodon., * Petalis calycem oequantibus vet minoribus.
2. C. vulgabum; hirsutum, suberectum, superne visçidum, foliis ovatis, braGteis herba-
ceis, petalis calycis longitudine, floribus çapitatis, calycibus oblongis pedicello longiori-
bus,-^Linn. Sp. PI. p. 627. Engl. Bot. t. 789. De Cand. Prodr. tT L p. 415. Pursh, FI.
Am. v. 1. p. .321. Elliott, Carol, v. 1. p. 524. Bigel. FI. Bost. ed. 2. p, 184.
Hab. At La (grande 'Chaudière. Pursh, MSS. About the Falls of Niagara, abundant. Douglas.
3. C. viscosum ; hirsutum, viscidum, diffusum, foliis oblongo-lanceolatis, bracteis mar-
g-ine membranaceis, floribus -sübpaniculatis, calyce -.oblongo pediqellis br^eyiore.—Linn.
Sp. PI. p. 627. Engl. Bot. t. 790. De Cand. Prodr. v. 1. p. 416. Pursh, FI. Am. v. 1. p.
320. Torrey, FI. o f Un. St. v . l . p . 158. Bigel, FI. Bost, ed. 2. p. 184. Rich, in Frankl. 1st
Joum. ed. 2. App. p. 18.
Hab. Canada. Pursh. About the trading posts, perhaps introduced. Dr. Richardson. Lake Huron.
Dr, Todd,
* * Petalis calycem superantibiis.
4. C. elongatum ; hirsutum, foliis linearibus internodiis longioribus -divaricatis, pedun-
ciilis terminalibus élpngatis bis .trichotomis, bracteis oppositis ovatis, petalis emarginatis
calyce acuto duplo lpngioribus, capsulis subglpljosis.—Pursh, FI. Am. v. 1. p. 321. De
Cand. Prodr. v. l .p . 417. Torrey, FI. ofUn. St. v . l . p . 460.
Hab. Plains of,the Columbia. Herb. Lewis. (Pursh.)—May this not be C. arvense? which I possess
from Mr. Menzies, gathered in the same country, and which Dr. Torrey says it nearly resembles, but in
having longer and narrower leaves, and longer petals.
5. C. Fischerianum ; hirsuto-subviscosum, caulibus prostratis, foliis ovatis sessilibus dis