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Prickles on a blackberry branch. In plant morphology, thorns, spines, and prickles, and in general spinose structures (sometimes called spinose teeth or spinose apical processes), are hard, rigid extensions or modifications of leaves, roots, stems, or buds with sharp, stiff ends, and generally serve the same function: physically defending plants against herbivory.
Sporotrichosis, also known as rose handler's disease, [2] is a fungal infection that may be localised to skin, lungs, bone and joint, or become systemic. [2] [4] It presents with firm painless nodules that later ulcerate. [3] Following initial exposure to Sporothrix schenckii, the disease typically progresses over a period of a week to several ...
Arranged on a conical surface (like a snail shell); used to describe inflorescence s in which the bud s are arranged in an almost helical manner on the outside of a long, tapering, conical rachis. bract A modified leaf associated with a flower or inflorescence and differing in shape, size, or color from other leaves (and without an axillary bud ...
Accessory bud – an embryonic shoot occurring above or to the side of an axillary bud; also known as supernumerary bud. Adventitious bud – a bud that arises at a point on the plant other than at the stem apex or a leaf axil. Axillary – an embryonic shoot which lies at the junction of the stem and petiole of a plant. Dormant – see "Latent ...
It is this route of infection, coupled with its presence on roses that give sporotrichosis its common name of "rose-handler's disease" [16] or "rose thorn disease". [17] Inhalation of spores is a rare route of infection largely associated with immunocompromised hosts. [18]
Bud; Crown (botany) Heteroblasty, an abrupt change in the growth pattern of some plants as they mature; Lateral shoot; Phyllotaxis, the arrangement of leaves along a plant stem; Seedling; Sterigma, the "woody peg" below the leaf of some conifers; Thorn (botany), true thorns, as distinct from spines or prickles, are short shoots
In a bud or flower bud, the relative arrangement of the sepals or petals of each flower whorl is called vernation. This arrangement must be observed in the flower bud because in the fully open flower the floral parts are often so far separated from each other that the vernation cannot be determined. There are six main types of vernation.
Grapevine tendrils and leaves. Thorns. Cladodes. Aerial stem modifications are modifications to the aerial stems, [1] vegetative buds and floral buds of plants growing in different conditions and which perform functions such as climbing, protection, support, synthesis of food, or vegetative propagation.