[NatureNS] more on Impatiens species from Martin Thomas

From: Jim Wolford <jimwolford@eastlink.ca>
Date: Sun, 07 Sep 2014 17:57:19 -0300
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To: naturens <naturens@chebucto.ns.ca>
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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

>=20
> 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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<html><head><meta http-equiv=3D"Content-Type" content=3D"text/html =
charset=3Dwindows-1252"></head><body style=3D"word-wrap: break-word; =
-webkit-nbsp-mode: space; -webkit-line-break: after-white-space;">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. &nbsp;Jim in =
Wolfville<br><div><br><blockquote type=3D"cite"><div><div lang=3D"EN-CA" =
link=3D"blue" vlink=3D"purple" style=3D"font-family: Helvetica; =
font-size: 12px; font-style: normal; font-variant: normal; font-weight: =
normal; letter-spacing: normal; line-height: normal; orphans: auto; =
text-align: start; text-indent: 0px; text-transform: none; white-space: =
normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: =
0px;"><div class=3D"WordSection1" style=3D"page: =
WordSection1;"><div><div><div style=3D"margin: 0cm 0cm 0.0001pt; =
font-size: 12pt; font-family: 'Times New Roman', =
serif;"><br><o:p></o:p></div><div><div><div style=3D"margin: 0cm 0cm =
0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;"><span =
style=3D"font-size: 11pt; font-family: Calibri, sans-serif;">Dear =
Jim:<o:p></o:p></span></div></div><div><div style=3D"margin: 0cm 0cm =
0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;"><span =
style=3D"font-size: 11pt; font-family: Calibri, =
sans-serif;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp; I was interested in your comments on<span =
class=3D"apple-converted-space">&nbsp;</span><i>Impatiens</i><span =
class=3D"apple-converted-space">&nbsp;</span>spp. Alain Beliveau who now =
works for ACDC in Sackville, NB, and I have been checking up on<span =
class=3D"apple-converted-space">&nbsp;</span><i>Impatiens&nbsp;capensis</i=
><span class=3D"apple-converted-space">&nbsp;</span>and<span =
class=3D"apple-converted-space">&nbsp;</span><i>pallida</i><span =
class=3D"apple-converted-space">&nbsp;</span>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<span =
class=3D"apple-converted-space">&nbsp;</span><i>capensis<span =
class=3D"apple-converted-space">&nbsp;</span></i>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<span =
class=3D"apple-converted-space">&nbsp;</span><i>capensis</i><span =
class=3D"apple-converted-space">&nbsp;</span>the spur is reflexed =
forward along the underside of the main flower and the nectary sac is =
longer than wide, while in<span =
class=3D"apple-converted-space">&nbsp;</span><i>pallida</i><span =
class=3D"apple-converted-space">&nbsp;</span>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<span =
class=3D"apple-converted-space">&nbsp;</span><i>pallida</i><span =
class=3D"apple-converted-space">&nbsp;</span>for sure. There are old =
records for<span =
class=3D"apple-converted-space">&nbsp;</span><i>pallida</i><span =
class=3D"apple-converted-space">&nbsp;</span>from both Capes Blomidon =
and Split. However, we have searched high and low in both l