OregonFlora: Cupressus macnabiana

	Hesperocyparis macnabiana (synonym of Cupressus macnabiana)
	MacNab cypress
Habit	Trees to 10 m; crown broadly conical.
Leaves	ovate, approximately 1.5 mm long, dark green, occasionally glaucous, with conspicuous pit-like abaxial gland; resin copious and sticky, sometimes glaucous.
Pollen cones	15–25 mm long.
Seeds	2–5 mm; light to medium brown; wing less than width of the body.
Trunks	to 1 m in diameter; bark rough, furrowed, fibrous; branchlets comb-like; to 1 mm in diameter.
Seed cones	globose, 1.5–2.5 cm long, brown to gray, not glaucous; scales 6–8; umbos present, 2–4 mm long.

	Hesperocyparis macnabiana
Distribution	[WildflowerSearch map]
Discussion	Lower elevation woodland, often on serpentine substrates. 300–1400 m. Sisk. CA. Native. While long rumored to occur in Oregon, it was not until 2010 that botanist Frank Callahan located and documented this species in a remote area of Jackson County.
Source	Flora of Oregon, volume 1, page 111 Stephen Meyers
Sibling taxa	H. bakeri, H. macnabiana, H. macrocarpa, H. sargentii
Synonyms	Callitropsis macnabiana, Cupressus macnabiana
Web links	Local floras: CA, OR Local Web sites: CalFlora, CalPhotos, Flora NW, PNW Herbaria WildflowerSearch iNaturalist (observations) USDA Plants Database LBJ Wildflower Center SEINet Plants of the World Online Encyclopedia of Life Wikipedia Google Image Search

Hesperocyparis macnabiana

(synonym of Cupressus macnabiana)

MacNab cypress

Habit

Trees to 10 m; crown broadly conical.

Leaves

ovate, approximately 1.5 mm long, dark green, occasionally glaucous, with conspicuous pit-like abaxial gland; resin copious and sticky, sometimes glaucous.

Pollen cones

15–25 mm long.

Seeds

2–5 mm; light to medium brown;

wing less than width of the body.

Trunks

to 1 m in diameter;

bark rough, furrowed, fibrous;

branchlets comb-like; to 1 mm in diameter.

Seed cones

globose, 1.5–2.5 cm long, brown to gray, not glaucous;

scales 6–8;

umbos present, 2–4 mm long.

Hesperocyparis macnabiana

Distribution

[WildflowerSearch map]

Discussion

Lower elevation woodland, often on serpentine substrates. 300–1400 m. Sisk. CA. Native.

While long rumored to occur in Oregon, it was not until 2010 that botanist Frank Callahan located and documented this species in a remote area of Jackson County.

Source

Flora of Oregon, volume 1, page 111
Stephen Meyers

Sibling taxa

H. bakeri, H. macnabiana, H. macrocarpa, H. sargentii

Synonyms

Callitropsis macnabiana, Cupressus macnabiana

Web links