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Curtis's Botanical Magazine/Volume 67/3816 Stylidium fasciculatum

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( 3816 )


Stylídium fasciculátum. Fascicled-
leaved
Stylidium.

******************


Class and Order.

Gynandria Diandria.

( Nat. Ord.—Stylidieæ. )

Generic Character.

    Calycis limbus bilabiatus. Corolla irregularis quinque-
fida, lacinia quinta (labello) dissimili minore sæpius de-
flexa, reliquis patentibus interdum geminatim cohærentibus.
Columna genitalium reclinata duplici flexura. Antheræ
bilobæ lobis divaricatissimis. Stigma obtusum indivisum.
Capsula bilocularis septo superne interdum incompleto.—
Herbæ aut suffruticuli. Folia aut radicalia rosulata aut
secus caulem sparsa, interdum basi attenuata. Pili sæpius
apice glandulosi. De Cand.

Specific Character and Synonyms.

Stylidium fasciculatum; caulibus plurimis adscendentibus
     glaberrimis foliosis, foliis linearibus acutis summis fas-
     ciculato-subverticillatis, floribus in spicam subracemo-
     sam terminalem bracteatam ad rachin glabram digestis,
     capsula compressa lanceolata loculo superiore vacuo
     angustissimo.
Stylidium fasciculatum. Brown, Prod. Fl. Nov. Holl. p.
     572. De Cand. Prod. 7. p. 337? Spreng. Syst. Veg.

     3. p. 749? Lindl. in Bot. Reg. t. 1459, certe.




1840 fascicled-leaved stylidium.jpg


   Professor Lindley has pointed out the only difference
between the cultivated plant and Mr. Brown's specific
character; but this difference, which lies in the ovarium and
fruit having only one perfect cell, is certainly neither acci-
dental nor the effect of cultivation, as our figure of the ripe
fruit, taken from a wild plant, will show. Native specimens
were sent by Mr. Baxter from King George's Sound, and
they accord in every respect with that cultivated. M. De
Candolle appears to have seen only the latter, and yet he
follows Mr. Brown in saying, that both cells of the capsule
bear seed, while at the same time he refers to the Botanical
Register, where the contrary is asserted.
   Descr. Stems several from the same root, from one to
two feet high, glabrous, leafy, particularly on the upper
portion, slightly branched. Leaves linear, acute, very
slightly rough: the upper ones as well as the bracteas, calyx,
and outside of the corolla furnished with a short, glandular
pubescence; lower ones scattered, upper ones fascicled,
and forming a kind of verticel of several approximated rows.
Spike from two and a half to six inches long, erect, shortly
stalked, resembling a raceme on account of the attenuated
base of the elongated ovaries: rachis glabrous. Bracteas
subulate, incurved and slightly falcate. Calyx five-cleft,
two-lipped, glandular, segments subulate. Corolla irregu-
lar, five-cleft, one of the divisions resembling a lip, smaller
than and of a different shape from the others, and deflexed:
the other divisions oval, quite entire, white and spotted
with red at the base. Stamens two: filaments united into a
column with the style. Anthers two-lobed, incumbent on
the stigma, the lobes much divaricated. Style one, united
with the column of stamens. Stigma blunt, undivided.
Ovary inferior, or cohering with the tube of the calyx,
narrow-linear, twice as long as the bractea, attenuated at
each extremity, compressed, with a ridge along the upper
side, two-celled, the lower or anterior cell bearing many
ovules; the upper minute and empty, contained within the
ridge. Capsule compressed, lanceolate, attenuated at the
apex, two-celled, the upper cell a mere indurated, empty,
very narrow tube, which is indehiscent: lower cell ventri-
cose, bursting along the placenta which is attached to the
upper margin. Seeds small, oval, slightly roughish, chest-
nut-coloured. Albumen between oily and fleshy, inclosing
the minute embryo.
   Professor Lindley mentions the plant to be annual, and only three
or four inches high: in the greenhouse of the Botanical Garden of Glas-
gow its duration is more than annual, and it attains to about two feet.
It is a very charming plant, no less deserving of cultivation for its beauty,
than for the singular property of the column of stamens being endowed
with a very active irritability, so that if touched with a pin on the out-
side when curved, it bounds over to the opposite side of the flower and
becomes inverted: this property is observable, in a greater or less
degree, in the whole Genus.
G.A.W.A.



Fig. 1. Flower, seen above, and f. 2, ditto seen from below, both seated on the apex
of the Ovary. 3. Ovary, cut transversely about the middle: all magnified. 4. Ripe fruit,
natural size. 5. Ditto, magnified. 6. Seed, magnified.