Among the specimens which I have had occasion to examine, the following species may 

 be referred to this genus : — 



1. L. chinensis. Hyssopus lophanthus. Linn. 



The corolla of this species is described as resupinate ; but that is not the case at least 

 with a specimen from Dahuria sent to 3Ir. Lindley by Dr. Fischer of Petersburgh. 



2. L. urcicifolius. Hyssopus urticifolius. Douglas. 



L. glabra, foliis cordato - ovatis obtusis crenatis, verticillis dense spicatis, laciniis 



lineari-subulatis, genitalibus longe exsertis A larger species than the others of the 



genus. Flower-spikes terminal, dense, ovate ; flowers of a pale purple, nearly as large 

 as in the L. chinensis. Introduced by Blr. Douglas from the north-west coast of America. 



3. L. nepetoides. Hyssopus nepetoides. Linn. 



4. L. scrofulariajfolius. Hyssopus scrofulariiefolius. Willd. 



5. L. anisatus, t. 1282. 



6. L. multifidus. Nepeta multifida. Linn From Siberian specimens received by 



Mr. Lindley from Dr. Fischer. 



The Labiatas with divergent stamina, to which section this genus belongs, might be 

 grouped into two tribes, the Menthoidea and the Satureinece ; of which I take this oppor- 

 tunity of giving the characters, as also of enumerating the genera, along with the charac- 

 ters of such as are new, and amended characters for those which appear to me to require 

 modification. 



Tribus 1. 3IenthoidejE. 



Corolla; tubus calyce brevior vel vix longior; limbus 4-5.fidus, lobis subaequalibus. 

 Stamina distantia, exserta, loculis parallelis vel divaricatis, vel rarius inclusa, loculis 

 parallelis. 



§ 1. Antherce 2-loculares, loculis parallelis. 



1. Lycopus. Linn Calyx aequalis, 5.dentatus. Corolla tubo brevissimo, aequalis, 



4-fida. Stamina 2, subexserta, distantia. Antheras 2-loculares, loculis parallelis. 



2. Meriandra. Benlh Calyx 2-labiatus, labio superiore concavo, integro, vel bre- 



vissime 3-dentato, inferiori 2-fido. Corolla subajqualis, 4-fida. Stamina 2, raro 3-4, 

 subexserta, distantia. Antherse 2-loculares, loculis linearibus distinctis substipitatis. 



Species mihi cognitae 2 ; M. benghalensis Benth. in Wall. cat. herb. ind. no. 1 526. 

 (Salvia benghalensis lioab.), et M. strohilifera Benth. in 1. c. no. 1527- 



3. Isanthus. Michx — Calyx campaiiulatus, ssqualis, 5-fidus. Corolla tubo brevissimo, 

 sequalis, 5-fida. Stamina 4, exserta, distantia. Antherae 2-loculares, loculis parallelis. 



4. Audibertia. Benth Calyx campanulatus, subbilabiatus, dentibus 3 siiperioribus, 



2 inferioribus, intiis fauce villosa. Corolla tubo brevissimo, sequalis, 4-fida. Stamina 4, 

 subexserta, distantia. Antherae 2-loculares, loculis parallelis. 



Species unica A. pusilla. Benth. {Thymus parviflorus. Eeq. in ann. soc. nat. 5. 

 p. 386.) 



I have dedicated this genus to my friend M. Audibert, of Tarascon, proprietor of one 

 of the most extensive Nurseries in France, who has introduced and naturalised many 

 rare and valuable exotics, and who, in 1820, accompanied M. Requien in his Botanical 

 tour in Corsica, where they first discovered the plant which constitutes this gentis. 



5. Mentha. Linn Calyx aequalis, 5-dentatus, intus fauce nuda, vel rarius villosa. 



Corolla tubo brevissimo, subwqualis, 4-fida. Stamina 4, distantia, exseita, vel inclusa. 

 Filamenta nuda. Anthera; 2-loculares, ioculis parallelis. 



This genus thus reduced com.prises the European, North American, and Siberian 

 species, the M. Boyleana Wall. cat. herb. ind. no. 1537, and probably also Mr. Brown's 

 New Holland species, and the M. javanica of Blume. I have also observed in Mr. 

 Liudley's Herbarium two new species of true Meuthas from Ceylon. 



6. Colebrookia. Roxb Calyx aequalis, 6-partitus, plumosus, maturatione papposus, 



carpellis adhaerens. Corolla subaequalis, 4-fida, lobo .superiori emarginato. Antherae 4, 

 subsessiles, 2-loculares, loculis parallelis. 



Spec. 2. C. oppositifolia et ternifolia. Roxb. 



7- Perilla. Linn — Calyx per anthesin subaequalis, 5-fidus, post anthesin 2-labiatus, 

 labio superiore dilatato 3-lobo, inferiori 2-fido. Corolla subaequalis, 5-fida, lobis 3 siipe- 

 rioribus, 2 inferioribus. Stamina 4, distantia, corollam ajquantia. Antherae 2-loculares, 

 loculis parallelis. 



Species 2. P. ocymoides Linn., et P. macrostachya Wall. cat. herb. ind. no. 1559. 



8. Acrocephalus. Benth Calyx tubulosus, basi subgibbus, 2-labiatus, labio superiori 



ovato piano integro, inferiori 4-fido. Corolla calyce brevior, subaequalis, 5-fida, lobis 



3 superioribus, 2 inferioribus. Stamina 4, brevia, distantia. Antherae 2-loculares, loculis 

 parallelis. 



Spec. A. scariosus. Benth. in Wall. cat. herlt. ind. no. 1563. I think it probable 

 that the Ocymum capilellatum Linn., and Ocymum acrocephalum Blume Bijdr. p. 384, 

 belong to this genus. 



