26 III. CRUCIFEEAE. [NastuHium. 



* N. officinale, B. Br. iti Ait. Sort. Kew., ed. 2, iv. 111. Glabrous. Stems 

 6in.-6ft. long or high. Leaves pinnate ; leaflets ovate or oblong, subcordate, sinuate- 

 dentate. Flowers in elongated racemes, white. Sepals half the length of petals. 

 Pods patent. 



NORTH and SOUTH Islands : Abundantly naturalised in watery places, rivers, &o., often 

 impeding drainage. Watercress. Oct. to Feb. Europe, &a. 



*BARBAREA, R. Br. 



Erect, leafy, usually glabrous. Leaves entire, lobed or pinnate. Sepals sub- 

 erect. Petals clawed. Stigma capitate or 2-lobed. Pod elongate, erect, obscurely 

 4-angled. Seeds 1-seriate. 



* B. praecox, B. Br. in Ait. Sort. Kew., ed. 2, iv. 109. A strict or sparingly- 

 branched biennial. Stems angled and grooved. Lower leaves lyrate, the terminal 

 division rounded or ovate, lateral in 4-8 pairs. Flowers yellow. Pods ascending, 

 slightly spreading. Pedicels as thick as the pods. — B. australis, Hook, f., Fl. N.Z. 

 i. 14. B. vulgaris, Hook, f., Handbk. 11. 



NORTH and SOUTH Islands : Naturalised in pastures, waste places, &c. American cress. 

 Oct. to Dec. Europe. 



The description of B. australis in PI. N.Z. i. 14 was drawn from Tasmaniau specimens, 

 those collected by Mr. Colenso being too young to admit of exact identification. The true B. vulgaris, 

 R. Br., has not been observed in New Zealand. 



2. CARDAMINE, Linn. 

 Glabrous or rarely pubescent annuals or perennials. Leaves entire^ lobed 

 or pinnate. Sepals erect or spreading. Pod linear^ flattened ; valves opening 

 from the base elastieally. Seeds numerous, flattened; funiculus slender. 

 Cotyledons accumbent. 



Species, about 60. Common in temperate and cold regions ; often alpine or subalpine. 

 Leaves pinnate. Flowers small . . 

 Leaves reduced to a single pinnule 

 Leaves spathulate, entire or lobed. Flowers small . . 

 Leaves deeply lobed near the base. Flowers large . . 

 Tall. Leaves entire or pianatifid. Flowers in elongated racemes 

 Stem short, stout, branched. Pods curved, narrow . . 

 Stem short, stout, branched. Pods broad . . 

 Stem short, branched from the base. Flowers forming a dense corymb 



1. C. hirsuta. 

 var. uniflora. 



2. C. d'epressa. 



3. C. bilobata. 

 i. C. stylosa. 



5. G. fastigiata. 



6. C. latesiligiia. 

 Y. 0. Enysii. 



1. C. hirsuta, L., Sp. PI. 655. A slender much-branched annual or 



perennial, lin.-18in. high, glabrous or pubescent. Leaves pinnate; leaflets 



rounded, shortly stalked, rarely toothed or angled ; cauline pinnatifid with 



linear lobes. Flowers usually small. Petals narrow. Stamens sometimes 



tetrandrous. Pedicels slightly spreading. Pods slender, erect, narrow-linear. 



Seeds smooth. — DC, Syst. Veg. ii. 259 ; Sm. E. B. t. 492 ; Hook, f., Fl. 



N.Z. i. 13, Handbk. 12; Benth., Fl. Austr. i. 70. C. parviflora, L., Sp! PI. 



919; Banks and Sol. ex DC. Syst. Veg. ii. 365. 



NORTH and SOUTH Islands ; THREE KINGS Islands ; STEWART Island • CHATHAir 

 Islands; AUCKLAND, CAMPBELL, and MACQUARIE Islands. Sea-level to 6,000ft'. Land-cress 

 Sept. to April. 



Var. hirsuta. Leaves rosulate. Stamens usually i.—C. flcxuosa, With. 



Var. debllis. Suberect or decumbent. Branches slender. Leaflets in. 2 or 3 pairs rounded 



or subcordate, sinuate. Pods with long slender pedicels. Styles long and slender. C dehilis 



Banks and Sol. MSS. ; DC, Syst. Veg. ii. 265 ; A. Gunn., Precurs. n. 626. Sisymbrium lieterophvllum' 

 Forst., Prod. n. 250. On the margins of lowland woods. ' 



