Stems: Much branched, low lying, root at the nodes, hollow, circular in cross section, and hairy. Towards the top of the flowering stems the leaves are reduced in size and have fewer lobes. They have hairs on the upper and lower surface and on the petiole, and usually have the veins distinctly pale in colour and have pale areas on the leaf surface. Stem leaves - Have long petioles and are 100 to 200 mm long. Each segment usually has 3, toothed lobes or is deeply divided. Petiole - 50-180 mm long with papery, clasping, sheathing bases.īlade - Egg to wedge shaped in outline, 15-80 mm long, divided in sets of 3 segments with the central segment on a obvious stalk to being trifoliate. The leaves are initially lobed but, as the plant grows, they become trifoliate or pinnate and much divided. The seedling has a very short hypocotyl and no epicotyl.įirst Leaves:The leaves arise singly, the first being 12 to 16 mm long overall with a petiole about 5 mm long. 8 to 12 mm long overall with a short petiole, and is hairless. The leaves are usually trifoliate and lobed. Summary:A perennial herb with creeping, stoloniferous stems and erect flower stems with yellow flowers with overlapping petals. Repens is from the Latin repe meaning to creep referring to the creeping habit of stems.Ĭreeping Buttercup because it has creeping stems and butter yellow, cupped flowers. They are normally avoided, but when other feed becomes scarce they may be grazed with serious consequences.Ranunculus is Latin for tadpole from the Latin rana meaning frog and may refer to the damp habitats preferred by many species in this genus. ![]() Wood-sorrel (Wood-sorrel’s growth is less upright and its flowers aren’t as large or showy)Ĭaution: The buttercups have a bitter, acrid juice which causes severe pain and inflammation when grazed by livestock. Flowering and setting seed from late May throughout the summer and fall.Seeds: 3 mm (1/8 in.) long, flattened, egg-shaped in outline with short hooked tip.Stamens: numerous around the cluster of tiny pistils.Grouped on long stalks in a much-branched inflorescence.Seeds: individually very small, 0.8- 1.4 mm (1/30- 1/20 in.) long, but very numerous in a short cylindrical cluster.Stamens: many in a ring surrounding the many tiny pistils.Sepals: 2- 5 mm (1/12- 1/5 in.) long with soft hairs.The whole inflorescence either rounded or elongated.Numerous but borne singly on long stalks at the ends of branches.Middle segment with a distinct short stalk.Base of each leafstalk flattened and partly surrounding the stem at each node.Upper leaves progressively smaller with fewer and smoother lobes.Middle similar to lower leaves but nearly stalkless.Blade deeply divided into 5 lobes irregularly jagged or coarsely toothed.Upper leaves much smaller, commonly either having 3 linear oblong segments with entire, or only slightly, toothed divisions, or simple.The segments cleft or lobed or with rounded teeth.Somewhat kidney-shaped in outline and distinctly 3-lobed to nearly 3-parted.1 or several from a thick rootstalk with numerous, spreading, coarse, fibrous roots. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |