Page:The Botany of the Antarctic Voyage.djvu/558

522 5. UswAjbrida, Ach.; Bich. Univ. p. 304. Engl. Bot. t. 872.

Hab. Chonos Archipelago, on trees ; C. Darwin, Esq.

A plant evidently impatient of perennial cold; inhabiting none of the Antarctic islands south of New Zealand and Tasmania in the Old World, nor of the Chonos Archipelago in the New. In the northern regions, again, it does not pass the wooded regions (63° N.), in America, or reach Lapland in Europe.

2. EVERNIA, Ach.

1. Evernia Magellanica, Mont.; in Voy. an Pole Slid, Bot. Crypt, p. 198.

Hab. Strait of Magalhaens ; B'Urville and Jacquinot.

A very beautiful and distinct species, which I have seen from no other locality than that indicated by Montagne.

3. RAMALINA, Ach.

1. Ramamna scojmlorum, Ach.; Bich. Univ. p. 604. Engl. Bot. t. 688. Var. a. thallo 1-1-y pollicari lineari rigido polito utrinque glabro, apothechs plurirms prirnum concavis demum convexis marginibus refiexis. R. verrucosa, nob. in Bond. Journ. Bot. vol. iii. p. 655.

Var. j3. thallo fastigiato sub 2-pollicari cartilagineo pallide stramineo lineari v. lineari-obovato laciniato polito obscure lacunoso hie illic terebrato apicibus sub-acutis, apotheciis nullis.

Var. y. thallo elongato 2-6-unciali rigide cartilagineo planiusculo v. lacunoso parce pruinoso pertuso laciniis unc. latis lobulis acutis, apotheciis nullis.

Var. S. thallo flavo dense fastigiato lineari-ligulato 1-5-unciali laciniis flaccidis nunc pertusis pluries divisis acuniinatis glabratis punctisve pruinosis sparsis, apotheciis nullis.

Var. e. omnia varietatis 8., sed rigida, apotheciis apices versus laciniarum confertis corrugatis plerisque monstrosis.

Var. £. terebrata ; thallo elongato 8 unc. ad pedalem flaccido lacunoso et corrugato pertuso pruinoso v. glabrato, rnargine integerrimo eroso lobulato v. prohfero, apotheciis nullis : — inter var. y. and S. media sed statura proceriore. R. terebrata, nob. in Bond. Journ. Bot. vol. iii. p. 654.

Var. rj. truncata ; fastigiata, thallo cuneato in lacinias breves truncatas flabellatim expanso laciniis pertusis pruinosis griseis apicibus involutis : — an forma incompleta ?

Hab. Var. a. Dry quartz rocks, Falkland Islands. Var. |8. and y.

Dry rocks, chiefly of clay slate, Falkland Islands. Var. S. Falkland Islands and Cape Horn; on rocks near the sea. Var. c Dry granite rocks, Cape Horn; Kerguelen's Land, Anderson. Var. £. Falkland Islands; on moist exposed rocks, near the sea, most abundant. Var. >?. with var. f. but in more shady places.

On these varieties, or rather forms, we are enabled to offer the following observations : —

The var. a. is exactly the English R. scopulorum, and the only one which produces perfect fruit in the Falkland Islands. Var. /3. is found in New Zealand, and in fruit; also abundantly in Brazil. Var. y. and f. are scarcely distinguishable from R. fraxinea of Norfolk: small specimens exactly resemble R. membrtmacea, Laurer, of New Holland ; it is a very common form in the Southern Hemisphere. Var. S. is very similar to the Uraguay R. prolifera, of Taylor. Var. e. is a small form of a Chilian variety. The var. q. inhabits Chiloe, and approaches near to R.pollinaria.