THE MARITIME FORMS OF MATRICARIA INODORA 171 



1. Var. MARITIMA (L.). 



Matricaria maritima L. Sp. PI. ed. ii. 1256 (1763). 



Chamcemehcm inodorum a. niaritimum Reichb. Ie. PI. Germ. xvi. 

 47 & t. 94, f. iii. 



Linmeus's short diagnosis is as follows : — " Matricaria recepta- 

 culis hemispluericis, foliis bipinnatis subcarnosis : supra convexis, 

 subtus carinatis " : the habitat is given as "in Europse septentrionalis 

 littoribus maris/' Little help is to be derived from the specimen 

 preserved in the Linnean herbarium, which consists of the end of a 

 shoot and has been damaged by insects. There is, however, one 

 point in his description which can perhaps be relied upon to separate 

 his plant from other maritime forms of M. inodora, and that is the 

 hemispherical receptacle : in M. salina the receptacle is consistently 

 described by various authors as conical or as resembling that of the 

 type. It is also to be noticed that LinnEeus localises his plant as 

 from the northern coasts of Europe. It is true that this might only 

 imply that he had not seen it from further south, and that " salina " 

 extends at all events up to parts of the northern coasts of Europe ; 

 but there is a form which answers to Linnseus's brief diagnosis and 

 which certainly does not extend nearly so far south as salina, and 

 this appears to be sufficient to justify the use of his name for it. In 

 this form the segments of the leaves are distant, not close-set as in 

 salina, and the leaves themselves form a wider angle with the stem. 

 The branches also are less erect, often leaving the stem almost at 

 a right angle, which produces the " diffuse " look mentioned by 

 several writers. The capitulum is more fleshy, and the top of the 

 peduncle much thickened at maturity. The leaf -segments are longer 

 than in typical salina, and may be more or less flattened or sub- 

 filiform (f. angustiloba Rouy, Fl. de Fr., Tripleurospermum niari- 

 timum Koch Syn. ed. 2 in add. p. 1026). The colour of the edges 

 of the phyllaries varies as in salina, but they are never so broad or 

 so black as in phceocephala. 



2. Var. salina DC. Prodr. vi. 52 (1837) ; Bab. Man. ed. vi. (1867). 

 Pyrethrum inodorum fi. sal i nam Wallr. Sched. Crit. 485 (1822). 

 Chrysanthemum inodorum L. /3. niaritimum Llovd, Fl. de l'Ouest, 



ed. 4 (1886) p. 192. 

 " Matricaria maritima L." Corb. Nouv. Fl. de Norm. 324 



(1893). 

 Chamcemelum inodorum /j. salinum Reichb. Ic. Fl. Germ. xvi. 



p. 47 & t, 94. f. ii. 

 Chamcemelum niaritimum Willk. Prodr. ii. 93 (1S7 0) Jide Lange 



in Suppl. p. 83. 

 Wallroth's description is as follows : — " Pinnis foliolorum lineari- 

 bus confertissimis brevibus mucronatis subtus parce pilosis, petiolorum 

 approximatis pectiniformibus caulem decumbentem purpureum ambe- 

 untibus." He goes on to say that he sees no reason to regard the 

 plant as anything but a variety of Pyrethrum inodorum, distin- 

 guished by the shorter and closer-set pinnules of the leaves whioh are 

 crowded round the stem " pectinis instar " and the stouter, decum- 

 bent, always bright purple stem, but that it is (specifically) distinct 

 from P. niaritimum Sm. De Candolle accepted Wallroth's descrip- 



n2 



