6 THE TASMANIAN FLORA. 



1. NASTURTIUM. 



Pods cylindrical, stort or elongated. Seeds distinctly in 2 rows. 



N". PALUSTBE, D. G. Trailing to erect, few inches to 2 feet. Lower leaves 

 divided into toothed lobes, upper ones simpler. Flowers yellow. Pods about 

 3 lines long, curved. 'N. terrestre, R. Br. 



Occasionally in damp places. Temperate climates tkroughout the world. 

 Fl. spring and summ^er. 



ISr. OFFICINALE, Linn. Coarser than N. palustre. Flowers white. Pods 

 longer. Europe. 



2. BARBAREA. 



Pods elongated, the valves having a prominent midrib. Seeds apparently 

 in 1 row. 



B. VULGARIS, M. Br. Erect, often 2 feet high, annual. Leaves with 6 or more 

 toothed lobes and a larger terminal one. Flowers yellow, about f inch 

 diameter. Pods linear, 1-lf inch long. 



Common throughout temperate parts. Fl. spring and summer. 



3. CARDAMINE. 



Pod elongated, linear, compressed. Seeds apparently in a single row. 

 Plant coarse. Pods 1 inch or more. 



Leaves entire or toothed 1. C. stylosa. 



Leaves lobed or divided 2. C. dictyosperma. 



Plant short or slender. Pods under 1 inch. 



Leaves at ends of branches only 3. C.radicata. 



Leaves radical or scattered .. . ... ... ... 4. C.hirsuta. 



1. C. STTLOSA, Z). C. Tall, ascending and erect herb, often 2-3 feet. Leaves 

 mostly toothed and broadly lanceolate, sometimes lobed, sessile, stem-clasping, 3-5 

 inches long. Flowers small, white, in elongating racemes. Pods rather flat 

 1-lf inch long. Seed pitted. 



Not very common, but widely distributed. South-East Australia and New 

 Zealand. Fl. Dec.-Feb. 



2. C. DiCTTOSPERMA, Hook. Coarse but not as tall as C. stylosa. Leaves 

 mostly deeply segmented into- numerous obtuse lobes. Pods longer and more 

 slender, otherwise flowers and fruit similar. 



Very common. South-Bast Australia. Fl. Nov.- Apr. 



3. C. RADICATA, Hook. Stems procumbent, thick, spreading, ascending at the 

 tips. Leaves at ends of branches, stalked, obovate, toothed or lobed. Flowers 

 rather large, in an elongating raceme. Pods f inch long and 2 lines wide. Seeds 

 compressed. 



Mt. Humboldt, Mt. Olympus, and near La Perouse, in crevices of basalt 

 PL Dec. 



4. C. HiRSUTA, Linn. A tufted or ascending herb, about 2-8 inches. Leaves 

 with few small, paired lobes and a larger broad terminal one, sometimes reduced 

 to the latter. Flowers small and white. Stamens often 4. Pod |-| inch Ion? 

 very slender. Seeds smooth, orbicular. 



Abundant. Throughout temperate climates. Fl. Nov.-Mar. 



Var. tenuifolia. Ascending, slender. Flowers white and purple, larger 

 than the type. G. pratensis, H. ; G. tenuifolia, B. 



Var. parviflora. Very small and slender. Leaves with few distant lobes. 

 Flowers minute. 



