MONOCOTYLEDONS
POACEAE - Grass Family
Hainardia cylindrica (common barbgrass) is a tufted annual to 70cm tall. The inflorescence is a green, rigid, cylindrical spike, straight or slightly curved. Flowers in spring and summer. A weed of brackish creeklines, lakes, swamps and estuaries from Perth to Busselton and the wheatbelt. Native to southern Europ
Holcus lanatus (Yorkshire fog) is a tufted, velvety-hairy, greyish perennial to 60cm tall. The inflorescence is a dense, narrowly-ovate panicle of pinkish flowers produced in spring and summer. A common weed of disturbed freshwater creeks and swamps from Perth to Albany. Native to Europe, north-west Africa and temperate Asia. |
|
H. setiger (annual fog) is a slender tufted annual to 30cm tall. The inflorescence is a greyish, contracted spike-like panicle, 2-5cm long and produced in spring. Occurs on roadsides and disturbed areas from Perth to Albany. Native to South Africa. |
|
Hordeum
(barley grass) all flower in spring. In some floras
Hordeum
is restricted to H.
vulgare while the rest are placed in Critesion,
however, that treatment is not followed here.
H. geniculatum (Mediterranean barley grass) (also called
Critesion
hystrix)
is an annual to 20cm tall. It occurs in disturbed sites from
Perth to Busselton. Native to the Mediterranean and
south-west Asia. |
|
Hyparrhenia hirta (tambookie grass) is a densely-tufted perennial to 1.5m tall with pale, greyish-green leaves. The inflorescence is a much-branched elongated panicle, each branch with a bract and terminated by a pair of grey, silky-hairy racemes. The panicle expands and becomes very fluffy when dry. Flowers in spring and summer. It is increasing and spreading rapidly along road and rail verges, and invading adjacent bushland, throughout the whole of the south-west, from Dongara to Ravensthorpe. Potentially a very serious roadside and bushland weed. Native to Africa, the Mediterranean and south-west Asia. |
|
Isachne
pulchella
is an aquatic, stoloniferous annual to 35cm tall. The
inflorescence is a stiff, narrow, purplish panicle, 2-12cm
long. Flowers in winter. It is naturalised in creeks north
of Derby. Native to tropical Asia and possibly also to
tropical Australia. |
|
Lamarckia
aurea
(golden-top) is a tufted, glabrous annual to 20cm tall. The
inflorescence is a dense, purplish-green, one-sided panicle,
to 6cm long, yellow in fruit. Flowers in spring. |
|
Lolium
(ryegrasses) are glabrous annuals, biennials or perennials.
The inflorescence is a slender, flat, two-ranked spike.
Fertile hybrids are readily formed between
L.
multiflorum, L.
perenne
and L. rigidum. L.
loliaceum
(stiff ryegrass) (often treated as a subspecies of
L.
rigidum)
is an annual to 30cm tall with a spike to 20cm long. Flowers
in spring and summer. Found on coastal sands and saline
areas. Native to the Mediterranean. L.
multiflorum
(Italian ryegrass) is an erect, short-lived perennial to
1.3m tall with a spike to 40cm long. Flowers in spring.
Occurs occasionally in paddocks, road verges and disturbed
sites between Perth and Albany. |
|
L. rigidum (annual ryegrass, Wimmera ryegrass) is an annual to 1m tall with a spike to 30cm long. Flowers in spring and summer. An important weed of crops and a widespread weed of islands, coastal sands, disturbed sites and road verges from Shark Bay to Busselton. Native to the Mediterranean. L. temulentum (darnel) an annual to 1m tall with a spike to 30cm long. Flowers in spring and summer. It is an occasional crop weed and a widespread weed of islands, coastal sands, paddocks, disturbed sites and road verges from Geraldton to Albany. Native to the Mediterranean. |
|
Webmaster: Rod Randall