therophyte


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therophyte

(ˈθɪərəˌfaɪt)
n
(Botany) a plant that overwinters as a seed
[from Greek theros summer + -phyte]
References in periodicals archive ?
Comprend notamment Ulex europeus (-3.08) une chamephyte, Asparagus albus (-2.56) une hemicryptophyte, Scorpiurus muricatus (-2.77) une therophyte. Le cote positif de l'axe regroupe les taxons des especes du matorral a caractere biologique diversifie, oo se melent Calycotome villosa (2.00), chamephyte Arisarum vulgare (1.83) geophyte, et deux therophytes Anagallis arvensis (1.83) et Galium verum (1.81).
As a general pattern, it has been noted, within the first 10-20 years of grazing abandonment, the physiognomy of the fields is characterized by a phase of lower cover of therophyte plants and little recovery of the perennial grass layer.
Therophyte and chamaephyte are the most dominant life forms in Tabuk region.
x Vitaceae Cissus bahiensis Lombardi x Vochysiaceae Vochysia thyrsoidea Phol Undetermined Undetermined 1 Undetermined 2 Undetermined 3 Undetermined 4 Undetermined 5 Undetermined 6 x Undetermined 7 x Undetermined 8 x Undetermined 9 x Undetermined 10 x 117 LF = Life form; Ch: chamaephyte; H: hemicryptophyte; Ph: phanerophyte; Th: therophyte; Cr: cryptophyte; Su: "suculenta"; Ep: epiphyte; OPI: open cerrado (site I); OPII (site II): open cerrado II; ROC: rocky outcrop cerrado; TC: typical cerrado; CCT: cerrado-caatinga transition; CAA: caatinga.
Therophyte was the most abundant life form consisted of 16 grass species (59.2%) followed by hemicryptophytes 09 species (33.3%) and phanerophytes 02 species (7.4%).
The life form spectra showed that therophyte was dominant group with 24 (66.67%) species followed by hemicryptophytes having 8 (22.22%) species, chamaephytes 3 (8.33%) species and geophytes with one (2.78%) species only (Fig.
(2005) Ph phanerophyte, Ch chamaephyte, He hemicryptophyte, Cr cryptophyte, Th therophyte Fig.
In relation to the latter, it has been found mainly on river bar therophyte communities of the Bidenti frondosae-Polygonetum lapathifolii provisional association (Campos, 2010), which are dominated by other Persicaria species, especially P.
Growth form (erect, semi-erect, or prostrate) and life form (trees, phanerophyte, chamaephyte, annual shrubs, perennial forbs, perennial grasses, biennial forbs, therophyte, or climbers) were assigned following Ali and Jari [1] and Sankary[26].
Ch: Chamephyte; Cr: Criptophyte; H: Hemicriptophyte; Hy: Hydrophyte; Ph: Phanerophyte; Th: Therophyte; Agr: Agriophyte; Arch: Archeophyte; Dia: Diaphyte; Epoe: Epoecophyte; Medit.