38 OBSERVATIONS ON HOLL’S LIST. 
to designate a plant which almost covers the mountains of 
Madera in July and August, and which I am inclined to con- 
sider synonymous with No. 2. Pulegium erectum of Miller, 
(the Mentha Pulegium 8. of Martyn's Ed. of Miller's Dic- 
tionary), sent to Miller from Gibraltar. 
e 
* Lamium maculatum, Linn.” Is not this rather L. pure — 
pureum, L., which, as well as L. amplexicaule, L. (not men- 
tioned by Mr. Hóll,) I have found in Madera, though I never 
met with the true L. maculatum, L.? 
* Thymus ericefolius, Roth.” This is doubtless my Satu- 
reja thymoides, Sol.; probably also Thymus terebinthaceus, 
Willd.—See Primitia, &c. 
* T. calaminthoides." Where and by whom is this species 
established? The very common Madera plant most probably 
intended by this designation, can scarcely be considered dis- 
tinct from Melissa Calamintha, L. 
* Rosmarinus officinalis, Linn.," grows only about cottages, 
and is but partially naturalized. 
* Ajuga reptans, L.," ** Glechoma hederacea, L.," and * Be- 
tonica officinalis, L.," I have no where met with either in 
Madera or Porto Santo. 
* Convolvulus edulis, Thunb.” The Madera ‘ Batata,” 
will undoubtedly scarcely admit of reference to the C. Batatas, 
L.; and yet its identity with "Thunberg's C. edulis would 
require better substantiation than a mere comparison of char- 
acters. It is possible Mr. Holl may have other very sufficient _ 1 
grounds for his reference; though I am almost afraid a vague 
idea of my own, in the absence of better authority, has in- 
fluenced him in deciding on the identity of the Madera and 
Thunberg’s plant. 
* Veronica Beccabunga, Linn." I have no where seen: 
but a variety of V. Anagallis, L., is common; and this, I think, 
must be the plant intended. 
** Trixago scordifolia, Reichb., patente ramosa, foliis ovato- 
oblongis obtuse serratis glabris:—singly in shady woods on the 
north coast." This, notwithstanding the word “glabris,” is — 
undoubtedly Euphrasia Hélliana, nob. Whatever he thought 
