170 



The Canadian Field-Naturalist 



[Vol. XXXIV. 



three plants have ever been found together, al- 

 though scattered over a wide area, but this year a 

 new station was discovered on the eastern shore of 

 Lake Massawippi, where clusters of from ten to 

 twenty plants were found in full bloom, thus mak- 

 ing a most charming picture. The other much rarer 

 member of this family the Small Round-leaved 

 Orchis, Orchis rolundifolia, and one of the three 

 new species discovered this season will be dealt 

 with hereafter in an annotated list as before. The 

 opinion expressed in my first paper "The Ottawa 

 Naturalist," Vol. XXXII, 1919, No. 8, p. 145, re- 

 garding the Large Yellow Lady's Slipper, C. par- 

 viflorum var. pubescens, has not matured, and I can 

 now safely say that over the ground I have ranged, 

 it is by far the rarest of the two Yellow Lady's 

 Slippers. Two new stations were discovered for the 

 Showy Lady's Slipper, C. hirsulum, and on its old 

 ground it was just as abundant as last year, but 

 only one plant was seen having three blooms. Per- 

 haps one of the pleasantest thrills experienced, was 

 the finding on June 26 of a new station near Barns- 

 ton for the Pink Lady's Slipper or Mocassin Flower, 

 C. acaule, where the species was in great profusion, 

 and amongst the lovely pink blooms were innumer- 

 able snowy white ones forming a delicious contrast. 

 Of the Habenarias one new station was found 

 for the Northern White Orchis, H. dilaiaia, where 

 the plants were exceptionally fine, but no examples 

 of the var. media were met with, although a special 

 search was made for them. Three plants only of 

 the Large Round-leaved Orchis, Hahenaria orbicu- 

 lata, were found in bloom, the height of these res- 

 pectively being 38, 33, and 25.50 cm., much below 

 those of macTophylla already given, whilst the length 

 of the spurs did not exceed 2.50 cm. Of the two 

 species orbiculaia seems to be the rarer, although 

 only five plants of macTophylla were actually found 

 in bloom, still the number of flowerless ones of the 

 latter, greatly exceeded those of the former. H. 

 Hoolferi one of the new species will be dealt with 

 hereafter in the same manner as O. rolundifolia. 

 The most interesting member of the family, however, 

 was x H. AndreTvsii, which was discovered here 

 last year, and of which I have had the good fortune 

 to find several more examples this season, but these 

 it is hoped to make the subject of a separate paper 

 later on. The ground on which I found my Large 

 Purple Fringed Orchis, Habenaria fimbriata, last 

 year, has since been trampled out of all recognition 

 by a herd of young stock, and not a single plant 

 could be found, but I located a few elsewhere. 

 With regard to this species and H. ps^codes much 

 uncertainty appears to exist regarding the precise 

 point where the one leaves off, and the other begins. 

 In this connection I have seen plants with lips 1 .8 

 cm. in width, whose height and size of leaves. 



however, would hardly come up to some people's 

 idea of fimbriata. The Grass Pink, Calopogon pul- 

 chellus, of which only four examples were found 

 last year, was I am glad to say much more in evi- 

 dence this season, the little station producing twenty- 

 two plants which were still in bloom when I visited 

 it on August I . I had previously, however, on 

 July 10, found a much larger station for it near 

 Beebe, some fifteen miles away. It was at this 

 station that I also came across the Rose Pogonia, 

 Pogonia ophioglossoides, growing in company with 

 Calopogon, but as this forms one of the three new 

 species, it will be dealt with hereafter in the same 

 manner as the others. In the Magdalen Islands 

 Calopogon grows as thickly as grass so Bro. Marie 

 Victorin tells me, but only attains a height of five 

 inches!, an instance no doubt of habitat and en- 

 vironment similar to that of Spiranlhes Romanzoff- 

 iana to be mentioned later on. 



Arefhusa or the Indian Pink, Arethusa bulbosa, 

 may be said to have been one of the surprises of the 

 season, two new stations having been found for it, 

 in one of which it was in the utmost profusion, one 

 almost white bloom appearing very conspicuous 

 amongst the rest. 



The Wide-leaved Ladies' Tresses, Spiranlhes 

 lucida, still holds its own as the rarest member of 

 this family in these parts, in fact it is the rarest 

 orchid here, only the one specimen mentioned in 

 my first paper having so far been found, and out of 

 the 33 species enumerated it is the only one I have 

 failed to find again this season. In point of num- 

 bers the Slender Ladies' Tresses, 5. gracilis, ran it 

 very fine last season, for only three plants of that 

 species could be found but this year I am glad to 

 say some half-dozen more were located on the 

 same ground. As illustrating the difference that 

 environment can make in the growth of a species, 

 a colony of the Hooded Ladies' Tresses, Spiranlhes 

 Romanzoffiana, growing on very dry ground could 

 only attain an average height of 8 cm., as against 

 29 cm., the average of that of another colony grow- 

 ing on very wet ground. Of the Rattlesnake Plan- 

 tains it is just possible that four plants I came 

 across in fruit on September 3 may eventually turn 

 out to be Menzies Rattlesnake Plantain, Epipaclis 

 decipiens. Certainly their spikes seemed more one- 

 sided and denser than is usual with lesselata, and 

 the locality was a new one, but outward appear- 

 ances are often deceptive, and I think for this rea- 

 son it will be best to leave the matter in abeyance 

 for the present, and wait until next year, when it is 

 hoped the plants may still be in existence, and will 

 flower again. The Lesser Rattlesnake Plantain, 

 E. repens var. ophioides, and . tesselala were 

 scarcer I thought than usual. In "Rhodora," Vol. 

 XIX, 1917, p. 38, there is a short note by Mr. H. 



