Vascular Plants of North Carolina
Account for Spotted Coralroot - Corallorhiza maculata   (Rafinesque) Rafinesque
Members of Orchidaceae:
Members of Corallorhiza with account distribution info or public map:
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Section 5 » Order Orchidales » Family Orchidaceae
Author(Rafinesque) Rafinesque
DistributionRecorded over nearly all of the Mountains, with only a few counties lacking records. However, alarmingly, data collected by the NC NHP indicate recent records for only one county. Not present downstate.

This is possibly the widest ranging orchid in North America, occurring across Canada and most of the Northern and Western states, including WA, OR, and CA. In the East, however, it ranges south only to NJ, PA, and OH, southward only in the Appalachians to extreme northern GA.
AbundanceStrongly declining in recent decades. Formerly perhaps infrequent to even locally common, but presently it is very rare and in danger of extirpation. Most experienced biologists have never seen it in NC, but thankfully it can be seen much easier in NY, CA, and many other places well away from the state. Though formerly not listed by the NC NHP, in the last few years it has been tracked by them as a Significantly Rare species. It probably deserves at least State Threatened status, within the next decade.
HabitatThis species occurs in moist forests, in deep decaying humus (as it is saprophytic), generally near shaded stream banks or in other moist forests, often in mixed hardwood-conifer forests. It can grow in somewhat more upland forests, such as Northern Hardwood Forests.
PhenologyBlooms in July and August, and fruits in August and September.
IdentificationA handful of orchids are saprophytic -- getting nutrients from dead or decaying organic matter -- and therefore have no chlorophyll; thus, no parts of the plants are green. This species grows to 1-2 feet tall, with a bronze or golden-brown stem, often with a purplish tint. The top quarter of the stem consists of the inflorescence, with 10-20 scattered flowers. Each flower is about 1 inch long and about 1/2-2/3 inch across; they are roughly the same golden-bronze color of the stem, except for a white lip with purple spots. Because this and other saprophytic plants lack leaves, they can be quite hard to spot in a shady forest, unless a colony is found; single individuals can be easily passed over! (It can occur in dense stands.) Sadly, for whatever reason(s), this striking plant, quite large for a Corallorhiza, has greatly declined in NC since the days of RAB (1968). The other two species in the genus are much smaller; C. wisteriana blooms and fruits only in spring (and is underground by late spring), whereas C. odontorhiza blooms in very late summer and fall and is quite small -- in fact, rather tiny for an orchid.
Taxonomic CommentsNone, other than the species has several varieties; the one occurring across Canada and the US is the nominate one -- C. maculata var. maculata.

Other Common Name(s)Summer Coralroot
State RankS1
Global RankG5
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