no 



OPENING AND CLOSIXG OP THE PASSION-FLOWER* 



lonf^itndinal direction about tfceir middle, [aT(d"iH>it>^ after 

 disei)j;:ic:e themselves at their «;)W<^x imd ^^J^^r|^'*uddeItJy 

 bat•kword: with the /<jcwifl> or divisions of the ie»^:^'i»t^«m- 

 f>anyin^ thein. Sometimetra rtTOnhej* of petals- tii^jjiilrfc 

 ^ themselves ami ex^iatid at once, at other t'imts theyrprii^eedf^ 

 rejjnhirly to burst open one after another. .o':5i^ 7 



Change* ia What deserve* particular notice i» the r-ha^gej- w^ieh'lbe 

 stamejts and pisti/sAiuderQO^ frow (he openiug^iU ^tl^e- shm^ 

 ting of the flower. r -■'*?'•?' •'••>^r^^' : -"rJt^ * 



tKc »t»5ien$. Immediately beu>re the flower opens^, the :imfjfrffn»'pfesenf 

 their .upper siirface, which is covered with yti\ovr^p<:^nt,'*lia^ 

 ward tht: stii^mata^ as is shown in plate I V^ fig, J;, being? re* 

 tainedin that position by the closed petal*.- 3ntv"»vhcnAhe 

 . petals, which ^tand opposite to thei* refpective' »i*at»ena, 

 expand «uddcnl>v which is generally the <:ase, t<oj» consi- 

 derable degree, then the ant fierSy tnrniiig; «poi>.the.t©p of 

 their ^/amcnts, as upon an axi*, appcdr Jis iji ilg^ 3» with 

 their yellow surface directed toward the heave^s:^ and^fafi'" 

 ther, as the petals gradually or suddenly i^xpa^<i: |o Hth^ir 

 . full extent, so do the anthers become incUfi<^ '^o^nwiifdvl 

 till they appepr as in fig. 4, with their yellow «urffice,fac«Jig 

 the horizon. Very ?oon after* the anthew,- turning stiil 

 upon the same axis, atquire a very different <appi?aH.anc©tf 

 for what was formerly their upper and J^e^h>w- snrfa€e,,.H|i,vT 

 becomes directed to the earth. Lastly, the authi&Ea pefi^ftn 

 half a revolution (by mean* of a st^o4<tf m^mV^no9^Mi^r>gi 

 which attaches them to the filaments d«seribe<t ^»*i»^^*«»))f 

 and then appear* as if suspended by-a thread, fiKe,d^t thetf^ 

 middle; their two end» pointing horizontally, a* 4". <figf'f^5 

 whereas, before the complete ei^pansion happened) p)m}.^4)^ 

 of the anthers (see fig. 4) was- directed a4mostvperpeiiv(|^- 

 cularly upward and the other downward. The filaments, 

 soon after this circumstance, become a liitle more cyf>vtd,fc 

 and the anthert retain the last mentioned pOJUjiio^n^.^^iU^-^lmi 

 time at which the Bower begins to jhiity (whic^ forihe^E^^^ 

 part hnppen* in the xjourse of ^ior 2S .hours,J,yhea it 

 claims the attention of the investigating physiologist, to 

 obierre the other changes of situattcn, »shich tlies^merts 

 tindergo. After remaining nearly a day in the'^tate fepYe- 

 pented by fig- 5, theonf/ien, by another semirevoFution, re- 

 gain nearly xh^ same position as iu tl^. 4; the filaments 



then 



