DROSERA LONGIFOLIA. LONG-LEAYED SUN DEW.
DROSERA longifolia; foliis omnibus radicalibus oblongo-obovatis longe petiolatis erectis, scapo
racemo simplici.
DROSERA longifolia. Linn. Sp. PI. p. 403. Huds. Angl. p. 135. Lightf. Scot. p . 175. With. Bot.
A r t\ cd. 4. vol. 2. p. 319 (excl. syn. Fl. Dan.). Hoffm. Germ. cd. 2. ml. 1 . P . I. p. 152.
Willd.,Sp. PI. vol. 1. p. 1544. Sm. Fl. B rit. p. 347. Engl. Bot. t. 868. Decand. Fl. Fr.
ed. 3. vol. 4. p. 728. Fl. Gail. Syn. p. 385. Wahl. Fl. Lapp. p. 75. Pursh Fl. Am. Sept.
vol. 1. p. 211. Hort. Kew. ed. 2. vol. 2. p. 189- Pers. Syn. PI. vol. 1. p. 357. Hook. Fl.
Scot. P . I. p.,98.
RORELLA foliis ellipticis, caule nudo paucifloro. Hall. Helv. n. 833.
ROS Solis folio oblongo. Long-leaved Rosa-solis, or Sun-dew. Raii Syn. p. 356.
Class a n d O r d e r . PENTANDRIA HEXAGYNIA.
[N a tura l Or d e r . DROSERACEÆ, Decand. Th. Eiern., Hook. CAPPARIDEÆ, Juss., Decand. Fl. Fr.]
Ra d ix parva, fibrosa, perennis.
Fo l ia omnia radicalia, longe petiolata,erecta,lutescente-
viridia, oblongo-obovata,' integerrima, margine
facieque superiore pilis-longis rufis glandulosis
viscosis te c ta : Petioli glabri.
Sc API palmares foliis longiores, teretes, glabri, ad extre-
mitatem racemosi, racemo simplice sex—octo-
floro, primum curvato dein er,ecto.
P e d ic e l l i breves, glabri.
Calyx profonde quinquefidus, segmentis ereetis obtu-
sis minutim tuberculatis.
Corolla pentapetala, petalis obiongo-obovatis albis
erecto-patentibus.
St am in a quinque, petalis paulo breviora: Antheræro-
tundatæ, flavæ.
P istillum : Germen ovato-rotundatum, subtrilobum:
Styli sex, filiformes, incurvi : Stigmata obtusa.
P er ic a r p ium : Capsula obovata, calyce corollaque
persistentibus tecta, unilocularis, trivalvis, valvis
medio seminiferis.
Recepta culum spongiosum.
S emin a obovato-pyriformia, fusca.
Fig. 1. Single flower. Fig. 2. Petal. Fig. 3. Stamen,
to show the ovules. Fig. 6. Capsule covered by the
Fig. 8. Single valve of a capsule, from which many of
Root small, fibrous, perennial.
L eaves all of them radical, upon long footstalks, erect,
yellow-green, oblongo-obovate, entire, with the
margin and superior surface covered with long,
red, glandular and viscid hairs: Petioles glabrous.
S capes four or five inches in height, longer than the
leaves, rounded, glabrous, racemed at the extremity,
with the raceme simple, six- to eight-flower-
ed, at first curved, then erect.
P ed ic e ls short, glabrous.
Ca ly x deeply quinquefid, with the segments erect,, obtuse,
minutely tuberculated.
Corolla o f five petals oblongo-obovate, white, erecto-
patent.
Stam en s five, a little shorter than the petals: Anthers
roundish, yellow.
P ist il : Germen ovato-rotundate, somewhat three-
lobed : Styles six, filiform, incurved: Stigmas
obtuse.
P e r ic a r p : Capsule obovate, covered by the persistent
calyx and corolla, one-celled, three-valved, the
valves bearing the seeds in the middle.
Receptacle spongy.
Se ed s obovato-pyriform, brown..
Fig. 4. Pistil. Fig. 5. Transverse section of the pistil
persistent calyx and corolla. Fig. 7. Capsule bursting.
the seeds have been removed.
An inhabitant of wet marshy places in various parts of Great Britain, and frequently growing in company with
the other native species of the genus, Drosera rotundifolia and anglica. From the former indeed there is no difficulty
in distinguishing it, although some botanists have suggested that it might be only a variety; but with the latter
there is so close an affinity that it is difficult to define the characters in words, if indeed the two be really distinct.
I have not the opportunity, at this time, of comparing fresh specimens of the D. anglica with the D. longifolia.
Smith, in English Botany, observes that the most certain character of the D. anglica exists in the oblong
and almost linear form of the leaves, which he has never found to vary : the styles are,described as eight,
and the capsule as having four valves. But the D. longifolia is known to vary in the proportion of its parts of
fructification ; and in the herbarium, the dried specimens seem scarcely to offer any real marks of distinction.
The fine specimen here figured was gathered on Goatfell in Arran, in company with Charles Parker, Esq. in
July 1823.