emarginato : inferiori patente 3-fido, lobo medio integro piano. Stamina 4, sub labio superior! 

 ascendentia, breviora vix e tubo exserta. Antherae biloculares, loculis ante anthesin parallelis, 

 demum divergentibus v. divaricatis. Stylus apice subaequaliter bifidus. Achenia sicca, la;via. 

 This genus is scarcely distinguishable from Nepeta. 



61. Colquhounia. Wall Calyx campanulatus, 10-nervis, subaequalis, o-dentatus, intus 



fauce nuda. Corolla tubo exserto incurvo, fauce inflata, bilabiata, labiis subeequalibus : superiori 

 erecto integro subfornicato : inferiori patente 3-fido, lobo medio integro. Stamina 4, sub labio 

 superiori ascendentia. Antherae biloculares, loculis divaricatis. Stylus apice subaequaliter bifidus. 

 Achenia sicca, superne alata. 



Dr. Wallich's collection contains, besides C. coccinea, two new species ; C. elegans Wall. cat. 

 no. 2084, and C. vestita Wall. cat. no. 2086. 



62. Achyrospermum. Blume Bijdragen^ p. 840. A genus apparently allied to Colquhounia. 



63 ? Holmskioldia. Betz Calyx amplus, campanulatus, membranaceus, venosus, margine 



subintegerrimo. Corolla tubo exserto, fauce vix inflata, bilabiata, labio superiori abbreviato 

 erecto integro : inferiori subpateiite trifido, lobis lateralibus brevissimis, medio longiori integro. 

 Stamina ascendentia, exserta. Antherae biloculares, loculis parallelis. Stylus apice subinteger. 

 Achenia sicca ? rugosa. 



•* Stamina e tubo exserta. Antherw dimidiatce vel casscs. 



64 ? Hemigenia. Br. prodr. p. 502. 



•*• Stamina intra tubum inclusa. 



65. Sideritis. hinn Calyx ovatus, campanulatus, 10-nervis, aequalis, vel dente superlore 



majore obliquus, 5-dentatus, spinosus, intus fauce villosa. Corolla tubo calycem subaequante, 

 bilabiata : labio superiori erecto bifido subplano : inferiori patente trifido, lobo medio emarginato. 

 Stamina 4, ascendentia, intra tuimm inclusa. Antherae biloculares, loculis divaricatis, staminum 

 inferiorum saepiiis cassae v. abortivae. Stylus apice breviter bifidus, lobo inferiori membranaceo 

 superiorem clavatum l)asi involvente. Achenia sicca. 



66. Marrubium. Linn. — Calyx ovatus, lO-nervis, striatus, subaequalis, dentibus 5 v. lOrigidis 

 patulis : intiis fauce villosa. Corolla tubo subexserto, bilabiata : labio superiori erecto lineari 

 bifido subplano : inferiori patente trifido, lobo medio crenulato. Stamina 4, ascendentia, intra 

 tubum corollae inclusa. Antherae biloculares, loculis divaricatis saepiiis confluentibus. Stylus 

 apice breviter bifidus, lobis conicis, superiori breviore. Achenia sicca. 



The above characters will probably include all the species of 3Iarrubium which remain after 

 the exclusion of those I have referred to Beringeria, and of the M. mollissimum Don, which 

 appears to be a Leucas. 



67- Lavandula. Linn Calyx ovatus, 13-nervis, subaequalis, 5-dentatus, dentibus 4 sub- 



sequalibus, quinto summo apice appendiculatim producto. Corolla tubo exserto, bilabiata; labio 

 superiori erecto emarginato v. bifido : inferiori patente trifido. Stamina 4, ascendentia, intra 

 tubum corollae inclusa. Antherae biloculares, loctilis divaricatis subconfluentibus. Stylus apice 

 subinteger, stigmatibus complanatis connatis. Achenia sicca. 



68 ? Phytoxys. Molin. ex Spreng. syst. no. 2081. 



69 ? Rizoa. Cav. ic. 6. p. 56. t. 578. 



§ 2. Calyx bilabiatus. Anthera biloculares vel connectivo brevi dimidiatce. 



70. Dracocephalum. Linn — Calyx tubulosus, 15-nervis, bilabiatus : labio superiori 3-dentato, 

 dentibus ovatis, media saepiiis latiore : inferiori 2-dentato, dentibus linearibus : intiis fauce nuda. 

 Corolla tubo nunc exserto nunc calyce breviori, fauce inflata, bilabiata : labio superiori erecto, 

 emarginato, fornicato : inferiori patente trifido, lobo medio emarginato subplano. Stamina 4, 

 sub labio superiori ascendentia, approximata. Antherae biloculares, loculis divaricatis. Stylus 

 apice subaequaliter bifidus. Achenia sicca, laevia. 



71. Melissa. Linn. — Calyx 5 v. sub 13-nervis, campanulatus, bilabiatus, labiis patentibus, 

 superiori subplano 3-dentato vel 3-mucronato, inferiori bifido : fauce intiis nuda v. vix pilosa. 

 Corolla tubo nunc calycem subaequante nunc exserto, fauce subinflata, bilabiata : labio superiori 

 erecto emarginato subplano v. rariiis fornicato : inferiori patente trifido, lobo medio subplano. 

 Stamina 4, sub labio superiori ascendentia, superiora nunc sterilia v. abortiva. Antherae bilocu- 

 lares, loculis demiim divaricatis. 



This genus would thus comprehend M. officinalis Linn., pyrenaica Jacq., parvi^fiora Benth. 

 in Wall. cat. no. 2825, and Jlava Wall. cat. no. 2826. I have also referred to it the Cunila 

 nepalensis Don prod. fl. nepal. p. 107, vv'l)i -h differs from the other species of Melissa by the 

 constant abortion of the upper stamina, and by the rugose nuts ; but as I have observed the 

 upper stamina to be occasionally sterile in several species of this and other genera of this section, 

 I can scarcely consider the remaining character, of the rugosity of the nuts, sufficient to. warrant 

 the constituting a separate genus. 



72. Lepechinia. Willd Supra. 



73. Thymbra. Linn Calyx 5-nervis, ovatus, supra planus angulis ciliatis, basi infrk 



gibbus, bilabiatus, labio superiori 3-dentato, inferiori bifido : intiis fauce villosa. Corolla tubo 

 exserto, bilabiata : labio superiori erecto emarginato v. bifido : inferiori patente trifido, lobo medio 

 emarginato. Stamina 4, sub labio superiori ascendentia, approximata. Antherae biloculares, 

 connectivo crasso, loculis distinctis parallelis. Stylus apice subajqualiter bifidus. Achenia sicca, 

 lajvia. 



74. Acynos. Manch Verticillastra pauciflora. Calyx IS-nervis, tubulosus, basi infra gibbus, 



