Overview
Herbs, annual or perennial, sparsely to densely pubescent with hooked and straight, nonstinging hairs on all parts of plant, stinging hairs absent. Stems often branched from base, erect, ascending, or decumbent. Leaves alternate; stipules absent. Leaf blades deltate, orbiculate to narrowly elliptic, or lanceolate, margins entire; cystoliths rounded. Inflorescences axillary. Flowers bisexual, staminate, or pistillate, proximal flowers usually bisexual and staminate, distal flowers pistillate; involucral bracts linear to lanceolate, without hooked hairs; tepals 4, distinct, ascending, lacking hooked hairs; stamens 4; style persistent or not; stigma tufted, deciduous. Achenes stipitate, ovoid, acute or mucronate (style base sometimes persisting as apical or subapical mucro), loosely enclosed by tepals. x =7, 8, 10, 13.
Species 20-30: primarily in temperate and subtropical regions.
Mature achenes are necessary for certain determination.[1]
Taxonomy
The Genus Parietaria is further organized into finer groupings including:
- Species: ZipcodeZoo has pages for 140 species, subspecies, varieties, forms, and cultivars in the Genus Parietaria: P. abyssinica · P. affinis · P. alsinefolia · P. alsinifolia · P. angustifolia · P. appendiculata · P. arborea · P. aspera · P. assurgens · P. australis · P. australis var. australis · P. australis var. glandulifera · P. boehmerioides · P. bracteata · P. canescens · P. capensis · P. cardiostegia · P. carnosula · P. chersonensis · P. circeaefolia · P. cochinchinensis · P. coreana · P. cretica · P. cryptorum · P. cuneata · P. debilils · P. debilis · P. debilis var. australis · P. debilis var. ceratosantha · P. debilis var. floridana · P. debilis var. gracilis · P. debilis var. micrantha · P. debilis var. pensylvanica · P. debilis var. squalida · P. decaisnei · P. decoris · P. diffusa · P. elliptica · P. erecta · P. erronea · P. falcata · P. feliciana · P. fernandeziana · P. filamentosa · P. filiformis · P. floridana (Florida Pellitory) · P. globulifera · P. gracilis · P. guineensis · P. hespera (Rillita Pellitory) · P. hespera Hinton var. californica Hinton (California Pellitory) · P. hespera var. californica (California Pellitory) · P. hespera var. hespera (Rillita Pellitory) · P. heterophyla · P. huetia · P. humifusa · P. indica · P. jaxartica · P. judaica (Pellitory of the Wall) · P. judaica 'Corinne Tremaine' · P. judaica afghanica (Spreading Pellitory) · P. judaica persica · P. judaica speluncarum · P. judiaca · P. lanceolata · P. laxiflora · P. levigata · P. linguaefolia · P. linguifolia · P. littoralis · P. lorifolia · P. lusitanica · P. lusitanica subsp. chersonensis · P. lusitanica chersonensis · P. lusitanica var. chersonensis · P. macrophylla · P. maderensis · P. mauritanica · P. micrantha · P. microphylla · P. mottle virus · P. multicaulis · P. muralis · P. nitens · P. nitida · P. nummularia · P. obtusa · P. occidentalis · P. ocimifolia · P. officinalis (Pellitory-Of-The-Wall) · P. oppositifolia · P. orizabae · P. parviflora · P. pennsylvanica · P. pensylvanica (Pennsylvania Pellitory) · P. pensylvanica var. floridana · P. pensylvanica var. hespera · P. pensylvanica var. microphylla · P. pensylvanica var. obtusa · P. pensylvanica var. pensylvanica (Pennsylvania Pellitory) · P. pensylvanica var. pensylvanica Muhl. ex Willd. (Pennsylvania Pellitory) · P. persica · P. pilosa · P. platyphyllos · P. polygonoides · P. populifolia · P. praetermissa (Clustered Pellitory) · P. prostrata · P. punctata · P. ramiflora · P. rechingeri · P. reclinata · P. repens · P. rhodopaea · P. roschanica · P. rotundifolia · P. rubicunda · P. rufa · P. ruwenzoriensis · P. ruwenzoriensis keniensis · P. scandens · P. serbica · P. serpyllifolia · P. soleirolii · P. sonnerati · P. sonneratii · P. squalida · P. suffruticosa · P. thymifolia · P. tibethana · P. umbricola · P. urticaefolia · P. urticifolia · P. velutina · P. verbascifolia · P. virgata · P. vittaria · P. vulgaris · P. welwitschii · P. zeylanica
Bibliography
- Chen Chiajui & Wang Wentsai. 1995. Urticaceae. In: Wang Wentsai & Chen Chiajui, eds., Fl. Reipubl. Popularis Sin. 23(2): 1404.
Footnotes
- "Parietaria". in Flora of North America Vol. 3. Oxford University Press. Online at EFloras.org.
Sources
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