Subtribe Spiranthinae - The Pollination Biology of North American Orchids: North of Florida and Mexico - page 48

Brown PM (2002c) Deiregyne . In: Flora of North America Editorial Committee (ed) Flora of
North America North of Mexico, vol 26. Oxford University Press, Oxford, pp 499-523
Brown PM, Dueck LA, Cameron KM (2008) Spiranthes stellata (Orchidaceae), a new species of
ladies'-tresses from the western United States. N Am Nat Orchid J 14:3-21
Calvo RN (1993) Evolutionary demography of orchids-Intensity and frequency of pollination and
the cost of fruiting. Ecology 74:1033-1042
Catling PM (1979) Breeding systems of northeastern Spiranthes spp. Can Bot Assoc Bull 12:37
(abstract)
Catling PM (1980a) Autogamy in northeastern North American orchids. Publication of Abstracts,
Canadian Botanical Association 1980, Botanical Society of America, Miscellaneous Series
Publication, No. 158, p. 20 (abstract)
Catling PM (1980b) Systematics of Spiranthes L. C. Richard in northeastern North America. Ph.D.
thesis, University of Toronto, Toronto
Catling PM (1981) Taxonomy of autumn flowering Spiranthes species of southern Nova Scotia.
Can J Bot 59:1253-1270
Catling PM (1982) Breeding systems of northeastern North American Spiranthes (Orchidaceae).
Can J Bot 60:3017-3039
Catling PM (1983a) Autogamy in eastern Canadian Orchidaceae: a review of current knowledge
and some new observations. Naturaliste Canadien 110:37-54
Catling PM (1983b) Spiranthes ovalis var. erostellata (Orchidaceae), a new autogamous variety
from the eastern United States. Brittonia 35:120-125
Catling PM (1983c) Pollination of northeastern North American Spiranthes (Orchidaceae). Can
J Bot 61:1080-1093
Catling PM (1990) Biology of North American representatives of the subfamily Spiranthoideae.
In: Sawyers C (ed) North American native orchid propagation and production. Brandywine
Conservancy/Mt. Cuba Center/New England Wildflower Society, Chadds Ford, PA, pp 49-67
Catling PM, Brown JR (1983) Morphometrics and ecological isolation in sympatric Spiranthes
(Orchidaceae) in southwestern Ontario. Can J Bot 61:2747-2759
Catling PM, Brown JR (2002) Stenorrhynchos . In: Flora of North America Editorial Committee
(ed) Flora of North America North of Mexico, vol 26. Oxford University Press, Oxford, p 545
Catling PM, Catling VR (1991) A synopsis of breeding systems and pollination in North American
orchids. Lindlyana 6:187-210
Catling PM, Cruise JE (1974) Spiranthes casei , a new species from northeastern North America.
Rhodora 76:526-536
Catling PM, McIntosh KL (1979) Rediscovery of Spiranthes parksii Correll. Sida 8:188-193
Catling PM, Sheviak CJ (1993) Taxonomic notes on some North American orchids. Lindleyana
8:77-81
Charlesworth B, Charlesworth D (1979) A model for the evolution of dioecy and gynodioecy. Am
Nat 112:975-997
Clausen J (1954) Partial apomixis as an equilibrium system in evolution. Caryologia
6(Suppl):469-479
Coleman E (1933) Further notes on the pollination of Spiranthes sinensis . Victoria Nat 50:61-64
Coleman RA (2005) Population studies in Dichromanthus and Hexalectris in southeastern Arizona.
Selbyana 26:246-250
Coleman RA (2009) A yellow form of Dichromanthus michuacanus (Llave and Lex.) Salazar and
SotoArehas in Arizona. Native Orchid Conf J 6:17-20
Coleman RA, Baker M (2006) Microthelys rubocallosa (Robins. And Greenm.) Garay
(Orchidaceae): a new orchid for the United States. Native Orchid Conf J 3:18-20
Coleman RA, Sirotnak J, Leavitt A (2006) The hunt for Deiregyne confusa . Native Orchid Conf J
3:7-13
Corbet SA, Cuthill I, Fallows M, Harrison T, Hartley G (1981) Why do nectar foraging bees and
wasps work upwards in inflorescences? Oecologia 51:79-83
Correll DS (1978) Native orchids of North America North of Mexico. Stanford University Press,
Stanford, CA