Page 153 - Marettimo_II^p

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onl.v in pn,rt .. \ •TOrdin~ wit h l his incomplete evolntion thc plaut. has not
boon ctble to ~prr:td lilte tho t.rne mediterrane11.11 ones, but snr·vivos ioday as
1t rclici on the Yortk nl roc·k~. ~l nrh likely in the ~:~auae wa.y IJe1HtvCR tt rlleso-
philou,:; ccotype of T,rmi<•crf' i1n711cxc' (Fig . . 107, 108), exclu:,ivel.v botmd l.u
thC' pcenliar habil.at of !ho \'Ol't ica) CJirfS, for wlùch, being a Jillllf', i.; well pre-
ndap1rll. To Uae samc grOUJl belongs Jber-is Jiellii}Jcrflorc1t8, whiclr :<hows tbe
::nmo gene!'al charador·ifttÌI·s ll>i Ruple1'r1mt <lianlltifuliwm, Diantlms ru,picolcl
aud .'\l'iit /i Bocconi. but, hn11 a gren.tl.'r tolerance for xerophilous lrabitats and
110 ndnJ>lation t o l ho vorl it·nl e li((,;, w bile i t is well prendapted for tlris habitat.
The origiu of thc.;e plnnt11 mu11t, be sougbt for up lo the pnJcogeue in tho
uwuntnius of the meditorranctttl ùistrict, under :t trOJ)Ìl'al climatc.
The:;l' J>hl.nL.; Rhow ~>01110 diff(lr('IH'I'S ono fTom t h11 ot.her, owing io thn placo
aud limn of tbeir· origin :
Uu.p7f'u.rttm dù(ll/hi ,foliwu wlrose ol'igiu 111il.(laL 111' hrought hn1·k In tiro Hetic-
Hiffn n lnnd. in t.hc '"~'cl'lt.orn ~l <•ditorr·anc!Ul, i~< 1lro riiOKt •ucsophilon" llllll
!!l ril'l ly lornlizod ; 8r•sl'li. !Jof!ooui whirh c·(•uld lmvo Lui\IJII ur•i~:tiu iu l ho <.:or-
,.;unliuin,u laruls i..; le~~ lllt'i<Ophilou>; a.nd lr><s scveroly ll>l':tlizrd ; J)irtnlh u8 ?'ttpi·
cnln of t ho Ego11.11 t;out i non t, heAiue~; i t,; rnc!lophiloull l'llllr'll<'lùr!!. "lwws also
~~>•uo othcr dtarnrlcrir~tit·~< wlrich lot. il 11preacl 11\'Cr a rn1 hcr largo area.
'l'hh! IHinptatiou J>Clw<•r. whiclr rcMhc~ ils ruaxir1111111 in fbi'I'Ì8 ~;en~perflorens.
Ìll to,.tificd by t he J)OSsibiJity Of Ji\'ÌII~ n long l ire !<(';l :<JrOJ'I'" Ull 0<'1'1111111 Of :<111110
alOJ1hilnH~ fcaluro" (<'rnsAulcnco).
Prom au analomirnl point o( vicw t,his gronp of plaul s iA daanwtPr·izcù by
lon.vrl'l with a "nb<·nt i<·olnr lining or r11urilla;!!e and h,,. l bo pn·.;en<·o f•f ><tom3.ta
on LIJo whole IMf su•·fa<•e, t>r·obably it 111a .. '· alt~o ot·c·ur ~~ pnr'tic·ulnr type of
lrairincs.:. FrOlli lt 111X0110111it•nl puint. or viow tlrot<IJ SflC<'ÌC8 111'0 ll'f•ll ciefinerl and
uror·o ur le"" i~oln lccl.
2) ::Jhm b!i oj CIJC1'(/I'CCn .•·eruphiloux l.'J}'(' (~co l'or· ex. Fig~<. 102, I IU, 118):
pro>~umo,bly i he,y vrigiuuto!l al; n lliglror nHJnula.in altitndo, nlH•vo tiro persistenL
fogs, wiU• rxposure!l t o l o nglusti n~ im;t)lnt ioll. iu oppoKitiou tu t ho provious ouc,;.
'l'ho ;;ped es aro mné'la liiH> tlro!le of t.ho moditernHwtnr ~;~bnr bs of today
(fltenophillous and ruiorOIJhillum; l.yj>ef<) anrl bave l!evoml fcntm·cs in couunou
with tJ1em. They diffor from thc.~o maiuly ou accoturt of 1 hcir deficiency of
well tlrfinecl growtb J'ythm. 'l'hjs rharad<>risti~ is indirntive of a dnil_y climate
rnthl'r tban of t\ :~ensonn l ouc. lntc:>r·mediate stnges botweon thi11 t,\'PC nnd tho
prececdiug oue umy bo found. The followiug plnnt~ bclong te, lhis l'a.legorJ:
,rspcr-uia. rwpeslrili, Lythospl:l'lllll/11 ros11w1·iuijolium, Scltttreja frulicui<Jsa, Heli -
flhrysum pendttlwu. 'I'II.IJIIIII~' niliduli. ils rcganlr:; thci1· stnrcLure:; the. e plauts
i~hOW t ho IOI'illi><al i1111 of t ho Jott()urn.Lil O n t be undersiòe o! t Ire lenf. 'l'wo types
or leaf 1.'0 11 be fountl : willr lm ir.v aull bnid ess upper !llll'faco. Ili l ho latter the
Jnuciln,ges 1<>111L (.o !lini; fm rn I,Jrp outcr' celi wnJI (:Subcnt icnhw) Lo \ho iuneL' oue,
dose l,o tlao pali:Jucle;~ . . \ >< rcgnrd!! their taxonortJy thf!so specie::; aro only feebly
1liffer·entiatc'cl aud iu KOIIHI 1·n~o thoy raaust IJe iuteqwctod onl,v ns v11rieties.
'l'hoy do uot show :w.r parti!'ulnr adn.ptn.tion t.o tho hnùitnL of vertic·al rocl;s,
for whir·h t hcy are ()uJ,r preaùupted.
'l'Ire species mentioneù Lill now are ali wesl mellitcJT:Wean, lml nlso two
oailt meiliterTaneau plani~ helong to thls group auù ::;bow some peculiar
dtaracteristics; Da,plme oirif()lia (with )ea.ves o{ moutane Rhodolleudron type,
Fig:.i. 131. l32. J 33) i~ drnmctcrized b:r growth witbout resting periods, by
il;\ fitt n p~;: t,o IIJ:u;:hy ha hit a 1" t'Ili Il i t;. tiPfiued tnxonornil'al poilition. I t.s rango