emarginato : inferiori patente 3-fido, lobo medio integro plano. Stamina 4, sub labio superiori 
ascendentia, breviora vix è tubo exserta. Anthere biloculares, loculis ante anthesin parallelis, 
demüm divergentibus v. divaricatis. Stylus apice subzqualiter bifidus. Achenia sicca, levia. 
This genus is scarcely distinguishable from Nepeta. 
61. Colquhounia.  Wall.— Calyx campanulatus, 10-nervis, subequalis, 5-dentatus, intùs 
fauce nudá. Corolla tubo exserto incurvo, fauce inflata, bilabiata, labiis subzqualibus : superiori 
erecto integro subfornicato : inferiori patente 3-fido, lobo medio integro. Stamina 4, sub labio 
superiori ascendentia. Anthere biloculares,loculis divaricatis. Stylus apice subzequaliter bifidus. 
Achenia sicca, superné 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. Retz.— Calyx amplus, campanulatus, membranaceus, venosus, margine 
subintegerrimo. Corolla tubo exserto, fauce vix inflatá, bilabiata, labio superiori abbreviato 
erecto integro : inferiori subpatente trifido, lobis lateralibus brevissimis, medio longiori integro. 
Stamina ascendentia, exserta. Anther® biloculares, loculis parallelis. Stylus apice subinteger. 
Achenia sicca ? rugosa. 
** Stamina è tubo exserta. Anthere dimidiate vel casse. 
64? Hemigenia. Br. prodr. p. 502. 
*** Stamina intra tubum inclusa. 
65. Sideritis. Linn. — Calyx ovatus, campanulatus, 10-nervis, sequalis, vel dente superiore 
majore obliquus, 5-dentatus, spinosus, intüs fauce villosá. Corolla tubo calycem subzquante, 
bilabiata: labio superiori erecto bifido subplano : inferiori patente trifido, lobo medio emarginato. 
Stamina 4, ascendentia, intra tubum inclusa. Anther® biloculares, loculis divaricatis, staminum 
inferiorum sepiús casse v. abortive. Stylus apice breviter bifidus, lobo inferiori membranaceo 
superiorem clavatum basi involvente. Achenia sicca. 
66. Marrubium. Linn.— Calyx ovatus, 10-nervis, striatus, subequalis, dentibus 5v. 10 rigidis 
patulis: intús fauce villosá. Corolla tubo subexserto, bilabiata: labio superiori erecto lineari 
bifido subplano: inferiori patente trifido, lobo medio crenulato. Stamina 4, ascendentia, intra 
tubum corolle inclusa. Anthere biloculares, loculis divaricatis sepiùs confluentibus. Stylus 
apice breviter bifidus, lobis conicis, superiori breviore. Achenia sicca. 
The above characters will probably include all the species of Marrubium 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, subeequalis, 5.dentatus, dentibus 4 sub- 
equalibus, quinto summo apice appendiculatim producto. Corolla tubo exserto, bilabiata; labio 
superiori erecto emarginato v. bifido: inferiori patente trifido. Stamina 4, ascendentia, intra 
tubum corolle inclusa. Antherz biloculares, loculis divaricatis subconfluentibus, . Stylus apice 
subinteger, stigmatibus complanatis connatis. Achenia sicca. à 
68? Phytoxys. Molin. ex Spreng. syst. no. 2081. 
69? Rizoa. Cav. ic. 6. p. 56. t. 578. 
82. Calyx bilabiatus. Anthere biloculares vel connectivo brevi dimidiate. 
70. Dracocephalum. Linn.—Calyx tubulosus, 15-nervis, bilabiatus : labio superiori 3-dentato, 
dentibus ovatis, media sepiüs latiore: inferiori 2-dentato, dentibus linearibus : intüs fauce nuda. 
Corolla tubo nunc exserto nunc calyce breviori, fauce inflatá, bilabiata : labio superiori erecto, 
emarginato, fornicato : inferiori patente trifido, lobo medio emarginato subplano. Stamina 4, 
sub labio superiori ascendentia, approximata. Antherz biloculares, loculis divaricatis. Stylus 
apice subeequaliter bifidus. Achenia sicca, levia. 
71. Melissa. Linn. — Calyx 5 v. sub 13-nervis, campanulatus, bilabiatus, labiis patentibus, 
superiori subplano 3-dentato vel 3-mucronato, inferiori bifido: fauce intüs nudà v. vix pilosá. 
Corolla tubo nunc calycem subequante nunc exserto, fauce subinflatä, bilabiata : labio superiori 
erecto emarginato subplano v. rariüs fornicato : inferiori patente trifido, lobo medio subplano. 
Stamina 4, sub labio superiori ascendentia, superiora nunc sterilia v. abortiva. Anthere bilocu- 
goi cron demùm divaricatis. : 
: is genus would thus comprehend M. officinalis Linn., pyrenaica Jacq., parviflora Benth. 
in Wall. cat. no. 2825, and flava Wall. cat. no. 2826. I Le also volte to it the Cunila 
nepalensis Don prod. fl. nepal. p. 107, which 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.——Supri. 
73. Thymbra. Linn. — Calyx 5-nervis, ovatus, suprà planus angulis ciliatis, basi infrà 
gibbus, bilabiatus, labio superiori 3-dentato, inferiori bifido: intùs fauce villosá. Corolla tube 
exserto, bilabiata : labio superiori erecto emarginato v. bifido : inferiori patente trifido, lobo medio 
emarginato. Stamina 4, sub labio superiori ascendentia, approximata. Anthere bilocula 
eompetitum crasso, loculis distinctis parallelis, Stylus apice subzqualiter bifidus. Achenia sicca, 
ævia. 
74. Acynos. Mench.—V erticillastra pauciflora. Calyx 13-nervis, tubulosus, basi infra gibbus, 
