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.


Holcus lanatus , RR

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.


H. setiger , PH

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.
H. glaucum (northern barley grass) (this is often placed under H. murinum as subsp. glaucum with H. leporinum as subsp. leporinum) is an annual to 30cm. It is a widespread weed of disturbed sites, grazed woodlands and shrublands from Meekatharra to Madura and Perth. Native to the Mediterranean. H. leporinum (barley grass) is an annual to 40cm tall. It is a widespread weed of crops, pastures, offshore islands, road verges and disturbed sites throughout southern Western Australia. Native to the Mediterranean.
H. marinum (sea barley) is an annual to 30cm. Found on disturbed or grazed, often saline sites from Wongan Hills to the Stirlings. Native to southern and western Europe. H. vulgare (barley) is an annual to 1m tall. An important grain crop, it occurs as a weed anywhere seed is spilt on road and rail verges, but does not persist. Native to Europe.


Hordeum leporinum , RR

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.


Hyparrhenia hirta , PH

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.
Lagurus ovatus (hare's tail grass) is a hairy annual, to 30cm tall. The inflorescence is a dense, ovoid, pale green panicle at the top of slender stalks, ageing straw-coloured, with long hairs. Flowers during spring and summer.
A common weed of sandy soils from Kalbarri to Israelite Bay, especially near the coast. Where it occurs inland, it may be confused with
Cynosurus that has a one-sided inflorescence. Native to the Mediterranean.


Lagurus ovatus , RR

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.
A widespread weed of road verges and woodlands from Kalbarri to Perth, particularly common in the Geraldton, Wubin, Mukinbudin region and widespread in disturbed areas in the Goldfields and Murchison. Native to the Mediterranean.


Lamarckia aurea, RR

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.
A native of Europe, North Africa and south-west Asia.
L. perenne (perennial ryegrass) is a tufted perennial to 90cm tall with a spike to 30cm long, flowering in spring and summer. An important pasture and lawn grass, it is found in paddocks and on road verges and other disturbed sites between Perth and Albany. A native of Europe, North Africa and temperate Asia.


Lolium perenne , PH

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.


L. rigidum , RR

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