HUTCHINSIA PETRÆA. ROCK HÜTCHINSIA.
H Ü T C H I N S I A ^ ; petalis culycc ,ix longioribus, siliculis „trinque
HÜTCHINSIA petræa. Brown in Hort. K m . ei. a. ml. 4. s 82
LEPIDIUM petroeum. Z m n S p P l p . 89S. FI. Suecip. 535. jacq. Find. p. 115. Jam. A,Mr.
% } 3J \ ^ Uli s- Fl- Angl. p. 280. With. Bot. Arr. ed. 4. vol. 3. p . 555. Smith
I M P' Fngl. Bot. t. 1 1 1 . Decani. Fl. Fr. ed. 3. vol. l . p . 706. De-
. Gali. p s f s ^ s . % T h m ! T ; . W * C/- * * ^ *
LEPIDIUM Linnæi. Crantz Austr. j ’asc. 1 . 7 . t. 2. f. 4. 5.
NASTURTIUM pumilum vernum. Bauh. Pin. p. 105.
NASTURTIOLUM montanum annuum tenuissime divisum. Raii Syn. p. 304.
Class a n d Ord e r . TETRADYNAMIA SILICULOSjE.
[Natural Order. CRUCIFERjE, J uss. Decandolle. (D iv . II. Siliculosee.) SILIQUOSAs, Linn.]
Gen. Char. Silicula elliptica integra; valvis navicularibus, apteris; loculis dispermis. Filamenta eden
tula. Br. in Hort. Keto.
Radix annua; parva, fibrosa, ramosa, pallide fusca.
Caules ex eadem radice solitarii vel bini, bi- ad qua-
dri-unciales, teretes, flexuosi, alternatim ramosi,
ramis divaricatis.
Folia; radicalia uncialia, stellatim disposita, numero-
Sa, horizon tali ter paten tia, impari-pinnata, pin-
nulis undecim ad quindecim, oppositis, ovatis,
subcarnosis, integerrimis : caulina his simillima
sed mino.ra, pinnulis, basi sæpe attenuatis, an- .
gustioribüs, inferioribusque hie- illic iterumque
pinnatis.
Flores minuti, corymbosi, demum raeemosi.
Pedunculi erectij demum reflexi, teretes, s c a b ri,^ . 7 .
Calyx patens; foliota concava, ovata, obtusa, viridia,
marginibus pallidioribus.
Petala alba, basi flavescentia, fig. 4. patentia, caly-
cis segmentis paululum longiora, ligulato-ovata,
apice obtusa, emarginata.
Stamina sex, quorum duo opposita breviora: Filamenta
alba, incurva ; Antheræ flavte, subrotun-
datæ, bilobæ, biloculares. Pollen ovatum.
Ovarium conico-ovatum, hinc planum. Stylus nullus.
Stigma expansa, plana.
Pericarpium : Silicula elliptico-ovata, obtusa, infra
cpnvexa, supra compressa, glabra, fusca, bivalvis,
bilocularis ; valvæ subnaviculares, immarginatæ,
dissepimentum valvis contrarium, membrana-
ceum, fig. 8, 9.
Eeceptaculum marginale, filiforme, podospermia duo
longitudine inæqualia prope apicem siliculoe emit-
tens, jig . 8.
Semina loculo singulo gemina, fulva, subrotundo-com-
pressa, superne, pro podospermi receptione, de-
pressa, jig . 10.
NTEGUmentum simplex, coriaceo-membranaceum, ex-
tenus, humido, mucilagine pellucido tectum,
v f ig - 1 1 . .
“ IBRY0 conduplicatus, olivaceus. Cotyledones ovate
» plâno-convexæ. Radicula sursum flexa, longitudine
cotyledonum et eorum rimæ accumbens.
1. Hutchinsia petræa. Fig. 2. Racemes o f seedexpanded.
Fig. 4. Petal. Fig. 5. Stamen. Fig. 6.
me valves removed. Fig. 9. The valves. Fig. 1C
f ‘g- 11. Embryo, with its cotyledons closed. Fig.
trom Fig. 3. more or less magnified.
Root annual, small, fibrous, branched, pale brown.
Stems single, or two from the same root, two to four
inches long, round, flexuose, alternately branched,
with the branches divaricating.
L eaves ; the radical ones an inch long, disposed in a
stellated manner, numerous, horizontally patent,
unequally pinnate, with the pinnules eleven to
fifteen in number, opposite, ovate, somewhat
fleshy, entire: the cauline ones resembling these,
but smaller, at the base having the pinnules frequently
attenuated and narrower, with the lower
ones here and there again pinnate.
Flowers minute, corymbose, at length racemose.
Peduncles erect, afterwards reflexed, round, rough,
Calyx patent; the folioles concave, ovate, obtuse'
.green, paler at the margins.
Petals white, yellowish at the base, jig . 4 . patent a
little, longer than the segments of the calyx, between
ligulate and ovate, at the apex obtuse and
emarginate.
Stamens six, of which two opposite ones are shorter
than the rest; Filaments white, incurved; Anthers
yellow, somewhat, round, two-lobed, and
two-celled. Pollen ovate.
OvaKT conical-ovate, plane on one side. Style none.
Stigma expanded, flat.
Pe r ica r p : a Silicle of an elliptical-ovate figure, convex
beneath, compressed above, smooth, brown,
two-valved, two-celled; the valves boat-shaped’
without a margin; the dissepiment contrary to
the direction of the valves, membranaceous,
fig- 8» 9.
Receptacle marginal, filiform, producing near the
apex o f the silicle two seed-stalks o f unequal
lengths, fig. 8.
Seeds two in each cell, yellow, nearly round, compressed,
above depressed for the reception of the
seed-stalk, fig. 10 . ,
I ntegument simple, coriaceo-membranaceous, exteriorly,
when moist, covered with a pellucid mu-
cillage, fig . 1 1 .
E mbryo conduplicate, olive-coloured. The Cotyledons
ovate, plano-convex. The Radicle bent up?
wards, the length of the cotyledons and ap-
pressed to their division. ;v .
vessels of the same, natural size. Fig. 3. Flower fully
Pollen. Fig. 7. Seed-vessel. Fig. s. The same with
). The seed with its pellucid mucilaginous covering.
12. Embryo with its cotyledons a little opened. All
StTVi?n S l ”C h 0m M B ! ““nesc? %“res were token were kindly communicated by Mr. Bicheno from
growing on waHs S i w T L o same coqnty, according to Hudson and Dr. John Ford
dine, an™Mr DUlwvt on „ K M S T 1* HJ .Davies lintls il “ at Gloddeath, Caerna™„-
ooribed it as a weed on the w a llT ^ s f I f f i “ ‘ C“ tIey Glamorganshire. In Pembrokeshire Mr. Milne has de-
kroke, and at Tenbv T l f i m J ! S‘ncllPol<!■! 11 likewise grows on a limestone wall about two miles from Pem-
Wfflsiydale Yorkshire J i l Mr‘ “ ct " ' h « «” rocks near the waterfall at Burton in Bishopsdule
itany a Kl 1 mjselt gathered it on rocks in Malham Cove, in the same countv in com
Stil V i“ed fTOnd llle Eev- James Dalton. vove, in me same county, m com-
* » of f t e S o v X ^ i L SS , ^ S m > a' T S rariom’hibited.;;. 8 OTerl00ked >n P dees where it exists. We have seen few inadltihvoiduu«ahl si llsa rdgiemri nthuatinv et hsiozsee mWaye beex -a
ta!l,Kair'1„r“ n™,,111111 the ? enera Wonging to those orders which, even to a casual observer are the most „„
5= B M i H M H fiy well-marked characters. Such is particularly the c^ e w?,h'
Sit James sP f '“ « o r e us, belonging to the last-menUoned family
«US as «emarmnof! J possessing the true pouch of a Lepidium, although he defines the pouch of that n i
’* a containing hvo“ ^ “"drcumstanc's1^ r t^ ^ a “'“ly entir<! aPex t0 ^ p o u c h , and each
!"» genus i and I most chec,-fim d * t ,h hch Br° wn h“ considered of sufficient consequence to form a
>» the cause of i l B B u ^ Uy d,opt ,ba ”ama ho has given after a Lady, now, alas! no more; whose labours
In the genus Tp-hJr ave *n another publication so frequently had occasion to notice.
«to cells of the * -* “ characterized by Mr. Brown, and which is merely distinguished from Hutchimia by
, Very nearto o i r ’fr'6 remiun t0 U>e Brilish « L- latifilhm and ruierale 3
leaves.; but j H / M W common on the Swiss alps, Specially in the shape o f the
> m0,e “,M l'S,CC ‘he le"8th °f itS a"d d'C ,