Fineleaf Hymenopappus (3)

Fineleaf Hymenopappus is easily overlooked because it has no ray flowers and small flower heads. It is usually a woolly/hairy plant with stems branching from a rosette or mound of basal leaves. Leaves are twice-divided into narrow or thread-like leaflets which are sometimes covered in woolly hairs, giving a grey appearance. Enlarged tubular disk flowers have five lobes and range in color from very yellow to very white, the protruding stigmas from white to pink. There are 13 varieties of this species according to Flora of North America. These are some which I have identified from normal photos and some I cannot, although they all seem different to me; the growth habit varies, as does the number of basal leaves, woolliness and thickness of leaflets.

Hymenopappus filifolious

Fineleaf Hymenopappus
Hymenopappus filifolius var. lugens

Family: Sunflower (Asteraceae)
AKA: Woolly-white, Woolly Hymenopappus, Cream Tips,
 Columbia Cutleaf, Threadleaf Sunflower

Photo taken on: May 15, 2009
Location: White Rock, NM
Life Zones: Plains and foothills
Habitat: Dry, sandy, gravelly, open areas

Grows from 8" to 24" high with whitish stems branching from a mound of basal leaves which are densely woolly at the base. Leaves are twice-divided into narrow leaflets covered in woolly hairs, giving a grey appearance. Stems have few leaves and branch into multiple flower heads which have pale, woolly bracts and no ray flowers. Flower heads are ¼" to ½" high and can be yellowish or whitish. arrow

Flora of North America reference

Hymenopappus filifoliousHymenopappus filifolious
Hymenopappus filifolious

Manyhead Hymenopappus
Hymenopappus filifolius var. polycephalus

Family: Sunflower (Asteraceae)
AKA:
Photo taken on: May 29, 2016
Location: Wet Mountains, Eastern CO
Life Zones: Plains and foothills
Habitat: Dry, sandy, open areas

Growing to 16" high with multiple flower stems. Leaflets are not woolly except at the base and are a soft green. Flowers are bright yellow with yellow/greenish woolly bracts.

Flora of North America reference

Hymenopappus filifolious

Fineleaf Hymenopappus
Hymenopappus filifolius var cinereus (H. arenosus)

Family: Sunflower (Asteraceae)
AKA: Fineleaf Wooly-white
Photo taken on: June 16, 2017
Location: Espinosa Trail, Abiquiu, NM
Life Zones: Plains and foothills
Habitat: Dry, sandy, open areas

Grows to 2 ½ feet high covered in dense white hair in a more rounded bushy form. Basal and stem leaflets are very finely divided. Flowers are less than ½" across and yellow.

Flora of North America reference

Hymenopappus filifolious

Fineleaf Hymenopappus UFO
Hymenopappus filifolius spp.

Family: Sunflower (Asteraceae)
AKA:
Photo taken on: May 15, 2016
Location: Plaza Blanca, Abiquiu, NM

Growing to 10" high, densely woolly with a single flower stem. Leaves are more rigid and have thicker leaflets. Flowers are whitish with greenish, woolly bracts and are about ¼" high. Stigmas are dark pink.

This keys to H. tenuifolious but has no stem leaves. Similar plants were growing in Poshuouingue, Santa Fe NF.

Hymenopappus filifolious

Fineleaf Hymenopappus UFO
Hymenopappus filifolius spp.

Family: Sunflower (Asteraceae)
AKA:
Photo taken on: May 23, 2016
Location: Red Wash Canyon, Abiquiu, NM

Growing to 16" high with multiple flower stems. Leaflets are not woolly and a soft green. Flowers are white with greenish, woolly bracts with reddish margins. On different plants stigmas are pink or yellow, both turning brown.

Yellow Round Clusters | White/Cream Round Clusters