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pine-drops, ptérospore andromeda, woodland pinedrops

Albany-beechdrops, pinedrops

Habit Herbs, achlorophyllous, heterotrophic.
Stems

absent.

Leaves

absent.

Inflorescences

1.5–17 dm, glandular-hirsute;

bracts 2–3.5 × 0.5–1 cm, scarious at maturity.

racemes, erect at emergence from soil, axis fleshy and fibrous, persistent after seed dispersal, pink to reddish or brownish, 0.5–1.5 cm diam. proximal to proximalmost flower.

Pedicels

decurved, somewhat longer in fruit;

bracteoles absent.

Flowers

sepals 4–6 × 2–3 mm;

corolla 6–9 mm, base not saccate, lobes reflexed, rounded to blunt;

stamens 3–5 mm;

anthers horizontal at anthesis, ca. 1 mm diam., awns to 1.5 mm;

ovary 3–4 × 4–6 mm, glabrous;

style 1–3 × 1 mm;

stigma yellowish, ca. 1.5 mm diam.

radially symmetric, nodding;

sepals 5, distinct, lanceolate-ovate;

petals 5, connate, cream to yellowish or white, without basal tubercles, (surfaces glabrous), corolla urceolate;

intrastaminal nectary disc present;

stamens 10, included;

filaments broader proximally than distally, glabrous;

anthers depressed-ovoid to ovoid, with awns, without tubules, dehiscent by 2 oval slits;

pistil 5-carpellate;

ovary 5-locular;

placentation axile;

style straight, slender;

stigma capitate, without subtending ring of hairs.

Fruits

capsular, pendulous, dehiscence acropetally loculicidal, no cobwebby tissue exposed by splitting valves at dehiscence.

Capsules

persistent, thin-segmented, remaining connate at apex, 5–10 × 7–14 mm.

Seeds

0.2–0.5 mm including wing.

100+, ovoid, with broad, rounded, membranous wing attached at 1 end.

x

= 8.

2n

= 16, 48.

Pterospora andromedea

Pterospora

Phenology Flowering summer.
Habitat Moist to dry, often deep humus of mixed-deciduous or coniferous forests (sometimes on calcareous substrates)
Elevation 60-3700 m (200-12100 ft)
Distribution
from FNA
AK; AZ; CA; CO; ID; MI; MT; NE; NH; NM; NV; NY; OR; SD; TX; UT; VT; WA; WY; AB; BC; NB; ON; PE; QC; SK; Mexico (Chihuahua, Durango, Nuevo León)
[WildflowerSearch map]
[BONAP county map]
from USDA
North America; n Mexico
[BONAP county map]
Discussion

Species 1: North America, n Mexico.

Species 1

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Source FNA vol. 8, p. 389. FNA vol. 8, p. 389. Author: Gary D. Wallace.
Parent taxa Ericaceae > subfam. Monotropoideae > Pterospora Ericaceae > subfam. Monotropoideae
Subordinate taxa
P. andromedea
Name authority Nuttall: Gen. N. Amer. Pl. 1: 269. 1818 , Nuttall: Gen. N. Amer. Pl. 1: 269. 1818 ,
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