Poa porphyroclados

Poa porphyroclados Nees.
J.G.C.Lehmann Pl. Preiss. 2: 105 (1846).

(GPWG 2001) : Subfamily Pooideae. Tribe Poeae.

Type of Basionym or
Protologue Information
: Australia: "In Australia occidentali: Ad
flumen Cygnorum, Hb. Preiss 1820 (Drummond) (LT: LE) Type said to be in
herb. Lindl. by Nees; LT: Hb. Preiss 1820, Australia: Western Australia:
Nova Hollandia (LE).

Recent synonyms:
P. serpentum.

Key references
(books and floras):
[1952] C.A.Gardner, Flora of Western Australia 1
Gramineae (108 as P. Maxwelii), [2002] D.Sharp & B.K.Simon, AusGrass,
Grasses of Australia
, [2002] J.Wheeler, N.Marchant & M.Lewington, Flora
of the South West (431 & 432 as P. serpentum), [2009] A.Wilson
(ed.). Flora of Australia, Vol 44A. Poaceae 2 (334).

Perennial. Culms 40–120 cm tall, 1–2 -noded. Mid-culm nodes glabrous. Lateral
branches simple. Leaves mostly basal. Leaf-sheaths scaberulous, glabrous on
surface. Ligule an eciliate membrane or a fringed membrane, a ciliolate
membrane, 0.4–0.6 mm long, abaxially scaberulous or abaxially hairy, truncate.
Leaf-blades filiform, flat or involute, 8–47 cm long, 0.3–3.8 mm wide.
Leaf-blade surface smooth, glabrous.

Inflorescence compound, a panicle. Panicle ovate, effuse, 7–32 cm long.

Spikelets pedicelled. Fertile spikelets many flowered, with at least 2 fertile
florets (2–6), comprising 2–6 fertile floret(s), with diminished florets at the
apex, oblong, laterally compressed, 4–8 mm long.

Glumes. Glumes
similar. Lower glume oblong, membranous, keeled, 1-keeled, 3 -nerved. Upper
glume oblong, 2.3–3.4 mm long, membranous, keeled, 1-keeled, 3 -nerved.

Fertile lemma 2.6–3.75 mm long, keeled, 5 -nerved. Lodicules present. Anthers

: Australasia.

: Western Australia.

Western Australia:

Notes. Endemic.
Flowers Oct.-Dec.



Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith