| Puccinellia laurentiana | |
|---|---|
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Monocots |
| Clade: | Commelinids |
| Order: | Poales |
| Family: | Poaceae |
| Subfamily: | Pooideae |
| Genus: | Puccinellia |
| Species: | P. laurentiana |
| Binomial name | |
| Puccinellia laurentiana Fern. & Weath. | |
Puccinellia laurentiana is a perennial grass which grows on gravelly seashores in south-eastern Canada. Its specific epithet "laurentiana" refers to the Gulf of St. Lawrence, where it grows.
Puccinellia laurentiana has solitary or somewhat tufted culms growing 10–30 cm (3.9–11.8 in) high. Its leaves are cauline with involute blades 3–6 cm (1.2–2.4 in) long. Basal leaf sheaths can be somewhat white. Its ligules are 1.5 mm (0.059 in) long and somewhat acute. Its panicle is 6–13 cm (2.4–5.1 in) long, with stiff and nearly glabrous floral branches. The branches are ascending. Its whitish spikelets are 4–6.5 mm (0.16–0.26 in) long with three to five flowers. The acute glumes are erose to serrulate; the first glume is 1–2 mm (0.039–0.079 in) long, narrowly ovate and acutish, with one nerve, and the second is 2–2.5 millimetres (0.079–0.098 in) long, broadly ovate and abruptly acute, with three nerves. The ovate lemmas are 2.3–2.8 mm (0.091–0.110 in) long and profusely pubescent on their lower nerves. The palea are lanceolate and scabrous above. The grass typically flowers from July into early August. [1]
P. laurentiana resembles Puccinellia coarctata and Puccinellia vaginata , but differs from both in its abruptly acuminate whitish lemmas and stiff involute leaves. It additionally differs from P. coarctata in its lemmas' pubescent nerves. [2]
Puccinellia laurentiana grows on gravelly seashores and sea cliffs in south-eastern Quebec and north-eastern New Brunswick, often on the Gulf of St. Lawrence for which it is named. [1] It can rarely be found in Nova Scotia and Maine. [3]
Pachypodium ambongense is a species of plant in the family Apocynaceae. It was first published as a species of the genus Pachypodium in 1924 by the botanist Henri Louis Poisson.
Pachypodium bicolor is a species of plant in the family Apocynaceae.
Bromus arvensis, the field brome, is a brome grass native to Europe and Asia. The specific epithet arvensis is Latin, meaning "of cultivated land".
Bromus hordeaceus, the soft brome, is an annual or biennial species of grass in the true grass family (Poaceae). It is also known in North America as bull grass, soft cheat, and soft chess.
Bromus secalinus is a species of bromegrass known as rye brome. The specific epithet secalinus is Latin, meaning "rye-like". The fruits are hard, rounded glumes that appear superficially similar to the rye grain, which gives the brome its common and scientific name. The grass has a diploid number of 28.
Festuca occidentalis is a species of grass known as western fescue. It is native to much of the northern half of North America and is most widely distributed in the west. It is most often found in forest and woodland habitat. The specific epithet occidentalis is Latin, meaning "western".
Bromus kalmii, the Arctic brome or prairie brome, is a species of brome grass. It is a native bunchgrass in the North-central and Northeastern United States, the Great Lakes region, and eastern Canada. The specific epithet kalmii refers to its discoverer Pehr Kalm.
Bromus erectus, commonly known as erect brome, upright brome or meadow brome, is a dense, course, tufted perennial grass. It can grow to 120 centimetres (47 in). Like many brome grasses the plant is hairy. The specific epithet erectus is Latin, meaning "erect". The diploid number of the grass is 56.
Rhus chirindensis is a medium-sized, semi-deciduous, trifoliate Southern African dioecious tree of up to 10 m tall, rarely 20 m, often multi-stemmed, occurring along the coastal belt from the Cape, through KwaZulu/Natal, Swaziland, Zimbabwe and Mozambique as far north as Tanzania, and growing in a wide variety of habitats such as open woodlands, in forests, along forest margins, in the open, among rocks and on mountain slopes. It was named by Swynnerton from a specimen collected by him near the Chirinda Forest in the Chipinge District of Southern Rhodesia. This is one of more than a hundred southern African species in the genus. It is commonly known as red currant because of a fancied resemblance of the fruit to that of the European redcurrant.
Branches dull brown or blackish, cylindric, pubescent or glabrous. Petiole 1·5–6·5 cm. long, almost cylindric, narrowly canaliculate and marginate above, pubescent or glabrous. Leaflets ± dull red-brown, ovate or ovate-lanceolate, acuminate, entire and ± undulate at the margin, membranous to ± rigid or subcoriaceous, glabrous or ± pubescent on the margin, midrib and nerves; median leaflet (3)6–13(16) × (1·2)2·5–4(7) cm., cuneate and frequently petiolulate at the base, the lateral ones (2)2·5–7(12) × (0·8)1·3–3·5(5·5) cm., asymmetric and slightly cuneate or somewhat rounded at the base, very shortly petiolulate to sessile; midrib slightly raised in the upper surface, very prominent below; lateral nerves arcuate, slender, raised on both sides, reticulation lax, almost invisible or sometimes conspicuous. Panicles terminal and axillary, ample, pyramidal, much branched, multiflorous, the terminal ones longer than the leaves, the axillary ones as long as the latter or somewhat longer; pedicels 1–2·5 mm. long. Male flowers: calyx-segments 0·5 mm. long, ovate, obtuse, glabrous; petals c. 1·5 mm. long, elliptic, obtuse; filaments c. 1 mm. long. Female flowers: ovary ovoid; styles reflexed; disk cupuliform, 5-lobulate; staminodes present. Drupe pinkish-yellow to reddish-brown, shining, (4)5(6) mm. in diam., globose, glabrous.
Oplismenus thwaitesii is a flowering plant that is endemic to India.
Bromus japonicus, the Japanese brome, is an annual brome grass native to Eurasia. The grass has a diploid number of 14.
Bromus squarrosus, the rough brome, is a brome grass native to Russia and Europe. The specific epithet squarrosus is Latin, meaning "with spreading tips". The grass has a diploid number of 14.
Hypericum denticulatum, the coppery St. John's Wort, is a perennial herb in the flowering plant family Hypericaceae. It is native to the Eastern United States. The species has two varieties, H. denticulatum var. recognitum and H. denticulatum var. acutifolium. The herb has a diploid number of 24 or 48.
Vulpia elliotea, known by the common name sand fescue or squirreltail fescue, is an annual grass native to the southeastern United States. Its specific epithet elliotea is named for its discoverer, Stephen Elliott.
Puccinellia fasciculata, or Borrer's saltmarsh grass, is an annual grass native to coasts of Europe and introduced to the northern east coast of North America. Its diploid number is 28.
Puccinellia macra is a perennial grass which grows on the coasts of south-eastern Canada. Its specific epithet "macra" means large, referring to its tall stature.
Puccinellia lucida is a perennial grass which grows in south-eastern Canada and occasionally elsewhere in the United States. Its specific epithet lucida means "shining", referring to the plant's lustrous glumes.
Poa subcaerulea is a perennial grass occurring in North America and Europe. Its specific epithet "subcaerulea" means "bluish". Its diploid number varies between 54 and 109.
Poa alpigena is a grass occurring in mountainous regions. Its specific epithet "alpigena" means "growing in the alpine".
Eragrostis mexicana, the Mexican lovegrass, is an annual grass found from North America down to Argentina. Its specific epithet "mexicana" means "from Mexico". Its diploid number is 60.