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Nasturtium. | CRUCIFERAE. | 463 
1. NASTURTIUM R. Br. 19/2. 
Glabrous or pubescent branched herbs. Leaves generally ‘pinnate or 
pinnately lobed, sometimes entire. Flowers small, yellow or white. Sepals 
short, equal, spreading. Petals short, scarcely clawed. Stamens 2, 4, 
or 6. Stigma entire or 2-lobed. Pod almost terete, long or short ; valves 
generally l-nerved ; septum thin, transparent. Seeds small, turgid, usually 
arranged in two rows; cotyledons accumbent. 
A genus of nearly 50 species, some of them very widely dispersed, but most 
abundant in the temperate and warm regions of the Northern Hemisphere. 
In this edition I have included in Nasturtium certain species previously placed 
by Hooker and others in the genus Cardamine, from which, however, they clearly differ 
in the seeds being 2-seriate. In a paper printed in the Trans. N.Z. Inst. (vol. xliii 
(1911) 178) I have given the chief reasons for the change. 
A. Rootstock slender, short. 
Slender leafy herb 6-20in. Leaves lyrately pinnatifid. lowers 
yellow rs As ‘sp ne cr 1. NV. palusire. 
Coarse glabrous herb. Leaves entire or sinuate. Flowers white.. 2. N. stylosum. 
B. Rootstock stout, as thick as ihe finger, crowned with numerous rosulate radical leaves. 
Flowering stems 6-18in. Leaves almost glabrous. Pods narrow, 
pe awe 58 in. broad hes oF 7 « oe f 3. N. fastigvatum. 
Ss alee 
Flowering stems 6-20 in. Leaves villous, spathulate. Pods broad, Uist - 
turgid, 4-41in. broad 4, N. latesiliqua. se: Chchnearabeil 
Flowering stems 6-20in. Leaves glabrous, linear, with few pro- 
jecting teeth. Pod broad, turgid .. - a .. 68. N. Grbbsir. 
Flowering stems short, dense, 2-4 in. Leaves covered with stellate 
pubescence. Pods narrow 6. N. Enysit. 
‘ R w ) . eet — Wer Unetaaa * 
i : palustre “POD yst. i rol 191.—A slender leafy branched herb 
with weak or decumbent stems 6-20 in. long, glabrous or slightly hairy. 
Leaves variable, usually lyrately pinnatifid, auricled at the base with the 
lobes toothed or irregularly lobed, sometimes almost entire, toothed or 
sinuate-lobed. Flowers small, yellow, in lax racemes. Pedicels slender, 
ebracteate. Petals about equalling the sepals. Pods oblong, turgid, 
slightly curved when ripe, 4-+in. long. Seeds numerous, crowded, in 2 
series.—Hook. f. Handb. N.Z. Fl. (1864) 10; T. Kirk Students’ Fl. (1899) 
25; Cheesem. Man. N.Z. Fl. (1906) 31. N. terrestre R. Br. in Art. Hort. 
Kew. iv (1812) 110; Hook. f. Fl. Nov. Zel. 1 (1853) 14. N._ sylvestre 
A. Rich. Fl. Now. Zel. (1832) 309 (not of R. Br.). A. Cunn. Precur. (1838) 
n. 625; Raoul Chore (1846) 47. 
Norrnu AND SoutH Istanps: Common in moist places from the North Cape to the 
Bluff. Usually in lowland districts, but ascending to over 2000 ft. in the river-valleys 
of Canterbury and Otago. Summer and autumn. An abundant plant in the 
temperate portions of both hemispheres. 
The common water-cress of Europe (Nasturtium officinale R. Br.) is now plentifully 
naturalized throughout New Zealand. It is easily known by its aquatic habit, creepine: 
or floating stem, pinnate leaves, and white flowers. 
(2. N. stylosum O. #. Schulz in Engl. Bot. Jahr. xxxii (1903) 596.— 
A tall, rather coarse, perfectly glabrous leafy branching herb 2-4 ft. high; erect 
or decumbent at the base ; branches long, divaricating. Leaves alternate, 
3-5 in. long, oblong-lanceolate or oblong-spathulate, entire or more usually 
minutely and remotely sinuate-toothed, sometimes lobed or pinnatifid at 
the base ; uppermost sessile, auricled at the base ; lower on long petioles. 
Racemes very long, 1-2 ft. or more, erect; pedicels short, stout. Pods 
