— 245 - 



Persia: N. 2179, prov. Gilan, in forests at Imam Sadé Hashim. 

 Sept. 16. 1899. 



33. Thymus Serpyllum L. var. angustifolius Wallr. 

 Ferghana: N. 352, at Issik bulak near Osh. June 16. 1898. 



34. Mentha aqaatica L. var. persica Briq. var. nov. 



Planta cire. 25 cm alta. Caulis ramosus, debilis, ramis divergenti- 

 adscendentibus, gracilibus, breviter adpresse pubescentibus, superne cine- 

 rascentibus. Folia pro specie parva, superficie 2 — 2,5 x 1 ,5 — 1 ,8 cm, 

 ovata, apice obtusa vel subobtusa, marginibus infra medium convexioribus, 

 supra viridia pubescentia, subtus pallide virentia, breviter adpresse prae- 

 sertim ad nervos pubescentia, petiolo brevi densius vestito 5 mm longo 

 praedita; nervatio simplex vel fere simplex, subtus aliq. prominula; ser- 

 ratura constans ex dentibus crenatis parvis, crebris, culminibus obtusius- 

 culis circ. 0,5 mm altis et 1— 2 mm distantibus. Capitula pro specie parva. 

 Galix fere 3 mm longus, extus subadpresse brevissime pubescens. 



Var. denticulatae H. Braun (in Verh. zool.-bot. Ges. Wien XL, 480 

 (1890); Briq. in Jacc. Gat. fl. valais p. 441) valde affinis, differt indu- 

 mento brevi plantam totam cinerascentem efficiente. 



Persia: N. 2162, in forests at Resht. Sept. 14. 1899. 



35. Mentha longifolia Huds. subsp. Royleana Briq. in Engl. u. 

 Prantl. nat. Pflanzenfam. IV, 3 a p. 322 (1897). 



var. inter 'cedens Briq., var. nov. 



Planta ad 50 cm alta. Caulis adscendens, ramosus, ramis adscen- 

 dentibus, breviter adpresse canescenti-pubescentibus , internodiis medio- 

 cribus. Folia oblongo-lanceolata, mediocria, superficie ad 4x1,5 cm, 

 apice acuminata, marginibus leviter convexis, basi subcordata, petiolo brevi 

 incano 2 — 4 mm longo insidentia, utrinque breviter incano-tomentella, 

 tomento glandulas sessiles occulente; nervatio simplex subtus haud pro- 

 minula; serratura constans ex dentibus mediocribus, acutis, prorsus versis, 

 culminibus infra 1mm altis et 3 — 4 mm distantibus. Spicastrum satis 

 debile, verticillastris (inferioribus exceptis) çongestis, cinerascentibus. Calix 

 parvus circ. 1,5 mm altus, tubo 1mm profundo, dentibus lanceolatis vix 

 ultra 0,5 mm longis. 



Var. tenellae Briq. (in Bull. Herb. Boiss. II, 695, 1894) affinis a 

 qua foliis utrinque incano-tomentosis differt. Eandem vel fere eandem 

 plantam distribuit Litwinow sub no. 68 ex Turcomania ad rivulum 

 Ashabadka. 



Transcaspia: N. 1780, at a stream near Merw. June 6. 1899. 



36. Mentha longifolia Huds. subsp. modesta Briq. in Engler u. 

 Prantl Nat. Pflanzenfam. IV, 3 a p. 322. 



var. Pamirensis Briq. var. nov. 



