NASTURTIUM. BARBAREA. 
*23 
starved or stunted pi. with the 1. very narrow differ greatly in 
appearance from luxuriant pi. growing on more shaded rocks 
with larger broader greener and more naked 1. But every inter- 
mediate form occurs between the two extremes : nor are the fl. 
less variable in intensity of colour in different situations, ranging 
from full bright lilac to almost white. 
3. Nasturtium B. Br. 
* Cardaminum DC. Pet. white entire, longer than the sep. 
1. N. OFFICINALE R. Br. Water Cress. Agriad. 
Pods spreading ascending scarcely longer than their often 
subdeclining stalks, wavy or subtorulose ; 1. lyrato-pinnate, 
leaflets subsinuate or repand, the lateral elliptic, the terminal 
one larger more rounded and subcordate. — DC. Syst. ii. 188; 
Prod. 1. 137 ; EB. 855; Sm. E. FI. iii. 192 ; Presl 44 ; WB. i. 71 ; 
Koch 37 ; Bab. 22. Sisymbrium, Nasturtium Desf. ii. 81 ; Brot. 1. 
587. — Herb. per. Mad. reg. 1, 2, 3, ccc ; PS. reg. 2, rrr. Watery* 
places and streams in Mad. everywhere ; in PS. only at the Fonte 
d’Area ; not found in any of the Dezertas. Febr.-July, but almost 
throughout the year. — Whole pi. generally smooth, occasionally 
here and there a little hairy*. St. creeping or procumbent root- 
ing copiously, often floating. Cal. always closed with the sep. 
erect. FI. white rather small. Very variable in size and lux- 
uriance ; when growing out of water, with small leaflets and 
short st., it is according to Koch and Babington N microphyttum 
Reich. ; when very* large with stout thick st. and large leaflets 
like a Sium, it is N. siifolium Reich. (N. officinale (3. Koch). 
4. Barbarea R. Br. 
fl. B. PR2ECOX R. Br. Early Winter Cress. 
Lower 1. lyrate, the pairs of lobes gradually larger upwards, 
the upper pair nearly as large as the roundish subcordate ovate 
or oval terminal lobe ; upper 1. deeply pinnatifid with parallel 
distant very entire linear or linear-oblong blunt lobes; pods 
long erecto-patent. — DC. Syst. ii. 207 ; Prod. 1. 140; Sm. E. FI. 
iii. 199 ; WB. ! i. 71, 2; Koch 40; Bab. 22. Erysimum prcecox 
EB. t. Il29. — Herb. bien. Mad. reg. 2, r. Wet places by the 
upper road to the Jardim above the Estreito Church; and at 
a little hamlet called Ribeira de Machico at the head of the 
Machico Valley half a mile below the Portella. Apr.-Julv. — 
St. ribbed angular erect 1-2 ft. high. L. dark green, their ter- 
minal lobe not abruptly* or greatly larger than the preceding. El. 
y. rather small and pale. Pods 2-3 in. long quadrangular. Whole 
pi. smooth. Flavour pungent not at all bitter : hence much used 
for early salads in Europe, though not in Mad. 
