CRUCIFERZA. 201 
right angles to the plane of the replum, narrowed at the base so 
as almost to appear stalked; valves with a dorsal nerve, and very 
convex throughout; stigma sessile. Seeds 2 to6in each cell of the 
pod, ovoid, compressed, not margined. Embryo with the cotyledons 
folded over on themselves above the base. 
A genus consisting of a single species, described below. 
The name of this genus is derived from swbu/a, an awl, from the form of the 
leaves. 
SPECIESI—SUBULARIA AQUATICA. Zinn. 
Puate CXLIII.* 
Reich. Ic. Fl. Germ. et Helv. Vol. Il. Zeér. Tab. XTT. Fig. 4232. 
Leaves all radical, awl-shaped. 
On the gravelly bottoms of lakes in mountainous districts, 
growing completely under water. Carnarvonshire and Anglesea 
seem to be the only English localities. In Scotland it is more 
abundant, occurring in Loch Skew, Dumfries-shire; Loch of 
Drum, near Aberdeen; and in many of the Highland lakes as 
far north as Ross-shire and Sutherlandshire. 
England, Scotland, Ireland. Perennial. Late Summer, Autumn. 
Root of numerous pure white fibres. Radical leaves in tufts, 
1 to 23 inches long, tapering gradually from the base to the apex. 
Scapes 2 to 4 inches high, extremely short and almost hidden 
amongst the leaves while in flower. Flowers few, white, about 
qo inch across. Fruiting raceme lax. Pedicels ascending, } to 2 inch 
long. Pod about } inch long, with the breadth generally about 
half the length. Seeds yellowish brown, punctured. ‘The embryo 
presents a difference from that of the other Camelinez, inasmuch 
as the cotyledons are not bent over close to the point where they 
join the radicle, but some distance above it, so that the lower part 
of the cotyledons is in a continuous line with the radicle, and it is 
only their upper portion which is folded over so as to bring the 
back of one of them against the radicle. Plant dull green, glabrous ; 
the leaves somewhat fleshy. 
Water Awlwort, Common or Aquatic Awlwort. 
French, Subulaire A quatique. 
This interesting little native ought to be in every aquatic garden. If planted in 
a pot of gravel with a little clay and sunk in a quiet pond it will grow readily, and 
then presents the curious phenomenon of a flower in full bloom under water. 
* The Plate is E. B. 732, with embryo added by Mr. J. E. Sowerby. 
2D 
