THE GENUS FUMARIA IN BRITAIN 45 



rotund ; when fresh, subacute with an inconspicuous neck slightly 

 narrower than the tip of the pedicel ; when dry, distinctly keeled- 

 comjjressed with the keel draiun into a very short, blunt beak which 

 is notched at maturity, coarsely but not densely tubercular-riigose, 

 with very shallow apical pits and below each of these a conspicu- 

 ous tubercle, from which a longitudinal ridge, often very obscure 

 but sometimes fairly marked on the side of the abortive ovule, 

 descends to the base of the fruit. 



Distribution. — This fine and well-marked species appears to 

 be endemic in Great Britain, and is known only in Cornw^all, 

 where it grows in similar situations to the other fumitories, in 

 whose company it may frequently be found. 



Its recorded habitats, in addition to which it probably occurs 

 in intermediate localities, are : — 



1. W. Cormuall: Penzance!! Helston 1! Newquay!! Lelant 

 (Hb. E. S. Gregory) I St. Ives. Sithney. Perranporth. 2. E. 

 Cormoall : Rock opposite Padstow, H. E. Fox, 1910 ! Little 

 Petherick, St. Minver. 



Section II. Parviflor^ (Angustisect^ of Haussknecht). 



Leaf-segments flat or channelled, lanceolate or linear. Flowers 

 rarely, if ever, larger than those of F. officinalis L., not exceeding 

 9 mm. in length. Upper petal (in good flowers) with broad 

 margins or wings more or less spreading. Lower petal with 

 margins or wings dilated towards the apex and spreading so as to 

 form a spathulate outline. Inner petals nearly straight and rela- 

 tively broader than in Section I. 



Subsection 4. Officinales. 



Peduncles usually short. Pedicels more or less thickened 

 towards the tip, erect-spreading in fruit. Bracts usually shorter 

 than the fruiting pedicels. Sepals more or less toothed, narrower 

 than the corolla and rarely exceeding one-third of its length. 

 Fruit very obtuse, truncate or subemarginate, obscurely keeled 

 and at least as broad as long ; with a very obscure fleshy neck 

 when fresh, and rugose when dry. 



In this group Haussknecht places F. officinalis L. wdth the 

 two closely allied Eastern plants, F. cilicica and F. Boissieri, 

 which he was the first to describe as separate species. The three 

 plants are strongly characterized by their peculiarly broad and 

 obtuse fruits, and show little affinity with either of the other 

 groups, although some forms of F. officinalis, possibly of hybrid 

 origin, tend to approach F. Vaillantii Lois, and F. Schleicheri 

 Soy-Vill., while others have been confused with F. muralis Sond. 

 and F. micrantha Lag. 



7. FuMARIA OFFICINALIS L. 



This well-marked species, which is described in Species Plan- 

 tarum, ed. i. p. 700, and is represented by a specimen in the 

 Linnean Herbarium, is one whose identity has been rarely mis- 



