Key to Psilocarphus

View taxon page for Psilocarphus

(For a list of species in Psilocarphus, use the above link.)

Jepson Manual glossary definitions can be seen by moving your cursor over words underlined with dots.

1. Largest heads 6–14 mm diam; paleae generally ± hidden by hairs, longest 2.8–4 mm

2. Largest heads 9–14 mm, ovoid, silky-tomentose, receptacle deeply lobed; paleae ± 

cylindric 

Elongate, with parallel sides and, at any point, round in transverse section.

, length generally 3.5–6 × width, 

wing 

1. Thin, flat extension or appendage of a surface or margin. 2. In many members of Fabaceae and in some other groups, each of two lateral petals.

at ± 1/2 

palea 

1. In Asteraceae, a scale-like bract that subtends an individual flower on the receptacle (equal to 'chaff scale' in TJM), absent in some genera, restricted to a ring separating ray and disk flowers in most tarweed species. 2. In Poaceae, the distal, generally smaller of two sheathing bracts subtending a flower, generally two-veined and -keeled and ensheathed by the lemma; with the lemma and flower, comprising the floret.

length ..... P. brevissimus var. multiflorus

2' Largest heads 6–9 mm, ± spheric, generally woolly, receptacle not or shallowly lobed; paleae obovoid, length 1.5–3 × width, wing at >= 2/3 palea length

3. Distal leaves generally 

lanceolate 

Narrowly elongate, widest in the basal half, often tapered to an acute tip.

to 

ovate 

Egg-shaped (i.e., widest below the middle) in two dimensions (i.e., in one plane), as a leaf.

, longest generally 8–15 mm, 1.5–4 × width; plants generally woolly; stems (1)2–10; fruit ± club-shaped ..... P. brevissimus var. brevissimus

3' Distal leaves generally oblanceolate to 

linear 

Elongate, with nearly parallel sides; narrower than elliptic or oblong.

, longest generally 17–35 mm, 4.5–9 × width; plants generally silky-tomentose; stems 1(3); fruit ± cylindric ..... P. elatior

1' Largest heads generally 3–6 mm diam; paleae ± visible through hairs, longest 1.5–2.7 mm

4. Distal leaves linear to narrowly oblanceolate, generally 6–12 × width, (3)3.5–5 × heads; fruit ± cylindric ..... P. oregonus

4' Distal leaves spoon-shaped to obovate or ovate, generally 1.2–5 × width, 1–2.5(3) × heads; fruit ± club-shaped

5. Distal leaves ± 

appressed 

Parallel or nearly parallel to and often in contact with surface of origin; used to describe the disposition of hairs, leaves, pedicels, etc.

to heads, ovate to widely 

elliptic 

In the shape of a flattened circle or ellipse; wider than linear

, generally 1.2–1.8(2) × width; proximal stem 

internodes 

Segment of an axis (generally a stem) between successive positions (nodes) from which one or more structures (especially leaves, buds, branches, or flowers) arise.

(2)3–6 × 

leaf 

Organ arising from a stem, generally composed of a stalk (petiole) and a flat, expanded, green, photosynthetic area (blade); distinguished from a leaflet by the presence in its axil of a bud, branch, thorn, or flower; sometimes with lateral, basal appendages (stipules); either simple (toothed, lobed, or dissected but not divided into leaflets) or compound (divided into leaflets).

lengths; disk flower corolla generally 4-lobed ..... P. chilensis

5' Distal leaves generally ± 

spreading 

Oriented more or less perpendicularly to the axis of attachment; often, more or less horizontal.

, spoon-shaped to obovate, generally 2–5 × width; proximal stem internodes generally 1–2(3) × leaf lengths; disk flower corolla generally 5-lobed ..... P. tenellus

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