36 OBSERVATIONS ON HOLL’S LIST. 
about thirty years ago amongst grass-seeds from England, by 
an English merchant yet alive. 
“ Pyrethrum grandiflorum, W.," is a Canary-island plant, 
not occurring in Madera. The plant intended is undoubtedly 
Chrysanthemum pinnatifidum, L. 
* Calendula amplezifolia, Reichb., acheniis interioribus in- 
flexis reticulato-scrobiculatis submuricatis, externis triangulari- 
bus dorso dentatis, foliis amplexicaulibus; found only once 
near the city."—I am much inclined to suspect that this was 
some imperfect state of Calendula arvensis, L., otherwise alto- 
gether omitted in the List, though one of the commonest and 
most abundant weeds in the Island. Its proper flowering 
season is in the winter or early spring months; and as Mr, 
Höll chiefly botanized in summer, the difference of the 
season will account for the rarity of his plant, as well as for 
any supposed variations from its real specific type. Calendula 
maritima, nob. MSS., a yet undescribed species, is also found 
in Madera, but not “near the city,” nor in any place likely 
to be visited by Mr. Höll: but even setting aside this objec- 
tion, it is hard to suppose the very peculiar and well-marked _ 
characters of its seeds would not have been so distinctly express- 
ed by Reichenbach, as to preclude all future doubt. Calendula 
officinalis, L., is also a frequent inmate of gardens. However, _ 
C. arvensis, L., deprived, as frequently happens in drying, of — 
its characteristic long-beaked muricated outer row of seeds, 
agrees, perhaps, as well aseven C. maritima, nob., with the char- 
acters assigned to C. amplezifolia. 
“ Achillea Millefolium, Linn.," only occurs occasionally in 
gardens. ; 
** Rothia cheiranthifolia, Roth,” and ** R. picroides, Reichb.” 
— Of Rothia, or rather Andryala, I have very numerous forms, — 
varieties, or species, according to some authors, but will not 
pretend to determine the particular plants intended by the — 
above designations. However, it may be reasonably supposed 3 
that by * R. cheiranthifolia, Roth,” is intended our com- _ 
monest plant of the groupe; though both this, as well as every — : 
other form or species found by me in Madera, has the generic 
