﻿Observations on the Flora of Japan, 



r.l / (Continued from Vol XIX. p. 156.) 



By 

 T. Makino. 



Mentha japonica (Miq.) Makino nom. nov. 



Micromeria japonica Miq. ProL, Fl. Jap. p. 38 ; Franch. et Say* 

 Enum. PI. Jap. I. p. 368. 



An aromatic perennial herb, not suffruticose ! , stoloniferous, 1-9 decim. 

 high ; roots fibrous ; stolon very long, slender, provided with minute subulate 

 scaly leaves on nodes, simple or loosely ramose. Stem erect, very slender, 

 ramose or simple, 4-^gonous, viridescent, glabrous but hispidulo-pubescent 

 at the nodes and often very sparingly retrorse-scabro-puberulent at the 

 angles, sometimes scabrous-puberulent towards the base, foliate; internodes 

 longer or shorter than leaves, about -J-4cm. long. Leaves small, decussato- 

 opposite, patent or erect-patent, rather dense or rather lopse, very shortly 

 petiolate or subsessile, elliptical to angustato-oblong, obtuse or sometimes 

 retuse, obtuse to shortly attenuated at base, entire or obscurely depressedr 

 crenate, subfirmly membranaceous, often very narrowly re volute towards 

 the under surface on margin when dry, often scabro-puberulent on the 

 midrib and often scaberulous towards the margin above, often very thinly 

 scabro-puberulent on the midrib and veins beneath, very minutely scabrous 

 on margin, minutely impressed : punctate on both surfaces, 5-26 mm. long, 

 2^— 15 mm. broad; midrib slender ; veins 3-5 on each side, erect-patent, 

 usually inconspicuous; petiole compressed-flat, attaining about 2 mm. long, 

 often thinly scabro-puberulent. Verticiljasters axillary in the superior; portion 

 of stem, opposite, but the upper ones fasciculato-condensed into a short 

 capitate form, few fo) several flowered, shortly peduncled, shorter or longer 

 than leaves; peduncle erect-patent, attaining 5j mm. long, or extremely 

 short, glabrous or slightly thin-puberulent ; bract minute, opposite, often 

 shorter or sometimes slightly longer than or equal to the pedicels, linear, 

 obtuse, lposely ciliated, 1-4 J mm. long : braeteoles often present at the 

 base of pedicels, very minute, obtuse. Flowers pedicellate, small, about 

 4-6 mm. long, dimorphic (hermaphrodite and pistillate, each on different 



