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Index of Subjects
and Split. However, we have searched high and low in both l
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Hi Jim & All,
The more things change the more they are the same. The criteria =
described below for distinguishing I. capensis and I. pallida are in =
full agreement with keys in Fernald (1950) and in Roland & Smith (1969). =
But I had forgotten (and perhaps never knew) that the sac which =
bears the spur is a modified sepal.
Yt, Dave Webster, Kentville
----- Original Message -----=20
From: Jim Wolford=20
To: naturens=20
Sent: Sunday, September 07, 2014 5:57 PM
Subject: [NatureNS] more on Impatiens species from Martin Thomas
On Sept. 3 Martin Thomas wrote me the following note in response to =
mine, and he includes the Scots=92 Bay expanding colony of pink =
jewelweed (Himalayan Balsam) that Ian McKay just reported. Jim in =
Wolfville
Dear Jim:
I was interested in your comments on Impatiens spp. =
Alain Beliveau who now works for ACDC in Sackville, NB, and I have been =
checking up on Impatiens capensis and pallida in NS, largely because of =
the great differences in specific characteristics in various =
descriptions in available books and because if one looks at large =
populations of capensis around here, the variations within that species =
are huge. We have concluded that leaf colour, shape and length of =
petiole are not reliable characteristics and that flower colour and =
spotting are also unreliable although pallida seems to be paler and the =
spotting weaker. However, the length and shape of the spur and nectary =
seem reliable. In capensis the spur is reflexed forward along the =
underside of the main flower and the nectary sac is longer than wide, =
while in pallida a shorter spur turns down at right angles to the flower =
axis and the nectary sac is wider than long. Nobody we know has ever =
seen pallida for sure. There are old records for pallida from both Capes =
Blomidon and Split. However, we have searched high and low in both =
locations with no firm results. The only populations we found on =
Blomidon are around the lower parking lot especially down the stairs at =
the start of the Jodrey Trail where a wet area is good habitat, =
supporting large numbers of specimens. All those there are typical =
capensis. Up on the Cape proper we have found none even though there are =
many areas of suitable habitat. At Cape Split there are lots of capensis =
along the roadsides before you get to the new parking lot, along and off =
the trail there are scattered specimens but few of them are in flower. =
Half way up the incline to the top ridge is a wet area where several =
little streams cross the main trail and create muddy footing. There, a =
small population has some of the characteristics of pallida especially =
in regard to the spur and nectary but the colour is a light orange. The =
only large population ofpallida mentioned in the literature is on Isle =
Haut. However, the cost of getting there is quite high unless a fair =
sized group all contributed.
Incidentally, there is a large patch of Himalayan =
Balsam on both sides of the final stretch of road to Cape Split which is =
certainly spreading and a little further on, on the right a very large =
area of Canadian Burnet spreading widely. Its white plumes of flowers =
are very obvious right now.
All the best, Martin.
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<DIV>Hi Jim & All,</DIV>
<DIV> The more things change the more they are the =
same. The=20
criteria described below for distinguishing <EM>I. capensis</EM> =
and <EM>I.=20
pallida </EM>are in full agreement with keys in Fernald (1950) and in =
Roland=20
& Smith (1969). </DIV>
<DIV> But I had forgotten (and perhaps never knew) =
that the=20
sac which bears the spur is a modified sepal.</DIV>
<DIV>Yt, Dave Webster, Kentville</DIV>
<BLOCKQUOTE=20
style=3D"BORDER-LEFT: #000000 2px solid; PADDING-LEFT: 5px; =
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dir=3Dltr>
<DIV style=3D"FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV=20
style=3D"FONT: 10pt arial; BACKGROUND: #e4e4e4; font-color: =
black"><B>From:</B>=20
<A title=3Djimwolford@eastlink.ca =
href=3D"mailto:jimwolford@eastlink.ca">Jim=20
Wolford</A> </DIV>
<DIV style=3D"FONT: 10pt arial"><B>To:</B> <A =
title=3Dnaturens@chebucto.ns.ca=20
href=3D"mailto:naturens@chebucto.ns.ca">naturens</A> </DIV>
<DIV style=3D"FONT: 10pt arial"><B>Sent:</B> Sunday, September 07, =
2014 5:57=20
PM</DIV>
<DIV style=3D"FONT: 10pt arial"><B>Subject:</B> [NatureNS] more on =
Impatiens=20
species from Martin Thomas</DIV>
<DIV><BR></DIV>On Sept. 3 Martin Thomas wrote me the following note in =
response to mine, and he includes the Scots=92 Bay expanding colony of =
pink=20
jewelweed (Himalayan Balsam) that Ian McKay just reported. Jim =
in=20
Wolfville<BR>
<DIV><BR>
<BLOCKQUOTE type=3D"cite">
<DIV>
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Jim:<O:P></O:P></SPAN></DIV></DIV>
<DIV>
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FONT-SIZE: 12pt"><SPAN=20
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