View source for Kobresia ← Kobresia You do not have permission to edit this page, for the following reason: The action you have requested is limited to users in the group: Users. You can view and copy the source of this page. {{Treatment/ID |accepted_name=Kobresia |accepted_authority=Willdenow |publications={{Treatment/Publication |title=Sp. Pl. |place=4(1): 205. 1805 |year=1805 }} |common_names=Kobrésie |basionyms= |synonyms= |hierarchy=Cyperaceae;Kobresia |hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Cyperaceae]]</div><div class="higher-taxon"><small>genus</small>[[Kobresia]]</div></div> |etymology=for J. P. von Cobres, 1747–1823, German bibliophile |volume=Volume 23 |mention_page=page 3, 5, 255, 257, 315 |treatment_page=page 252 }}<!-- --><span class="statement" id="st-d0_s0" data-properties="whole_organism duration;whole_organism growth form;whole_organism architecture;whole_organism growth form"><b>Herbs,</b> perennial, cespitose, short-rhizomatous.</span> <span class="statement" id="st-d0_s1" data-properties="culm shape"><b>Culms </b>rounded-trigonous.</span> <span class="statement" id="st-d0_s2" data-properties="leaf position;leaf position"><b>Leaves </b>basal and cauline;</span> <span class="statement" id="st-d0_s3" data-properties="basal sheath duration">basal leaf-sheaths persistent;</span> <span class="statement" id="st-d0_s4" data-properties="ligule presence">ligules present;</span> <span class="statement" id="st-d0_s5" data-properties="blade shape">blades involute to filiform.</span> <span class="statement" id="st-d0_s6" data-properties="inflorescence position or structure subtype;inflorescence architecture;inflorescence arrangement;inflorescence architecture;inflorescence architecture"><b>Inflorescences </b>terminal, spicate or paniculate, simple or compound;</span> <span class="statement" id="st-d0_s7" data-properties="spikelet quantity">spikelets mostly 10–30;</span> <span class="statement" id="st-d0_s8" data-properties="proximal bract shape;proximal bract shape">proximal bracts subtending spikes leaflike or scalelike;</span> <span class="statement" id="st-d0_s9" data-properties="bract shape">bracts subtending spikelets scalelike.</span> <span class="statement" id="st-d0_s10" data-properties="terminal and distal spikelet architecture;terminal and distal spikelet architecture"><b>Spikelets:</b> terminal and distal spikelets usually 1-flowered, staminate;</span> <span class="statement" id="st-d0_s11" data-properties="proximal spikelet architecture;proximal spikelet architecture;proximal spikelet architecture;proximal spikelet architecture;proximal spikelet architecture;proximal spikelet reproduction;flower quantity;flower architecture;flower quantity;flower architecture;flower architecture;bract shape;scale quantity;scale reproduction">proximal spikelets 1-flowered and pistillate, or 2–4-flowered and bisexual with 1 pistillate flower proximally and 1–3 staminate flowers distally, all enclosed by scalelike bract open to one side (perigynium), perigynium sometimes enclosing additional sterile scales.</span> <span class="statement" id="st-d0_s12" data-properties="flower reproduction"><b>Flowers </b>unisexual;</span> <span class="statement" id="st-d0_s13" data-properties="perianth presence">perianth absent;</span> <span class="statement" id="st-d0_s14" data-properties="stamen quantity">stamens 3;</span> <span class="statement" id="st-d0_s15" data-properties="style arrangement or course or shape;style shape;base duration">styles linear, usually 3-fid, base persistent.</span> <span class="statement" id="st-d0_s16" data-properties="achene shape"><b>Achenes </b>usually trigonous, included in perygynium.</span><!-- -->{{Treatment/Body |distribution=Mainly high mountains of Asia;a few in arctic and subarctic regions and high mountains of Northern Hemisphere |discussion=<p>Species ca. 30 (3 in the flora).</p><!-- --><p>See 26. Carex for a discussion of the inflorescence and flower structure of Kobresia. The inflorescences of Kobresia cannot be clearly divided into primary and secondary inflorescences as in most other genera of Cyperaceae. The proximal part of the inflorescence usually is composed of bisexual spikelets arranged on a simple axis or on a compact panicle. Distally there is a transition first to spikelets consisting only of a pistillate flower, then to staminate flowers subtended by the scale. In species with compound inflorescences this transition may also occur on the branches. In this account, for convenience, the structures subtended by a scale are all considered to be spikelets even though, as discussed in Carex, staminate flowers are considered to be a simple flower and not a reduced staminate inflorescence.</p> |tables= |references= }}<!-- --><div class="treatment-key"> ==Key== <div class="treatment-key-group"> {| class="wikitable fna-keytable" |-id=key-0-1 |1 |Perigynia 3.5–5.5 mm; scales 3.5–5 mm, midvein fading toward tip. |[[Kobresia sibirica|Kobresia sibirica]] |-id=key-0-1 |1 |Perigynia 2–3.5 mm; scales 2–3.5 mm, midvein distinct almost to tip. |[[#key-0-2| > 2]] |-id=key-0-2 |2 |Inflorescences usually compound, (2–)3–8 mm wide; basal sheaths persistent, dull, usually with remains of blades attached. |[[Kobresia simpliciuscula|Kobresia simpliciuscula]] |-id=key-0-2 |2 |Inflorescences simple, 2–3 mm wide; basal sheaths persistent, somewhat glossy, bladeless. |[[Kobresia myosuroides|Kobresia myosuroides]] |} </div></div><!-- -->{{#Taxon: name=Kobresia |author=Peter W. Ball |authority=Willdenow |rank=genus |parent rank=family |synonyms= |basionyms= |family=Cyperaceae |illustrator=Amanda Humphrey |illustration copyright=Flora of North America Association |distribution=Mainly high mountains of Asia;a few in arctic and subarctic regions and high mountains of Northern Hemisphere |reference=None |publication title=Sp. Pl. |publication year=1805 |special status= |source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V23/V23_454.xml |genus=Kobresia |achene shape=trigonous |basal sheath duration=persistent |base duration=persistent |blade shape=involute;filiform |bract shape=scale-like;scale-like |culm shape=rounded-trigonous |flower architecture=open;staminate;pistillate |flower quantity=1;3 |flower reproduction=unisexual |inflorescence architecture=compound;simple;spicate |inflorescence arrangement=paniculate |inflorescence position or structure subtype=terminal |leaf position=cauline;basal |ligule presence=absent |perianth presence=absent |proximal bract shape=scale-like;leaflike |proximal spikelet architecture=2-4-flowered;pistillate;2-4-flowered;pistillate;1-flowered |proximal spikelet reproduction=bisexual |scale quantity=additional |scale reproduction=sterile |spikelet quantity=10;30 |stamen quantity=3 |style arrangement or course or shape=linear |style shape=3-fid |terminal and distal spikelet architecture=staminate;1-flowered |whole_organism architecture=short-rhizomatous |whole_organism duration=perennial |whole_organism growth form=herb;cespitose }}<!-- -->[[Category:Treatment]][[Category:Cyperaceae]] Templates used on this page: Template:Cyperaceae (view source) Template:Treatment/AuthorLink (view source) Template:Treatment/Body (view source) Template:Treatment/Body/Maps (view source) Template:Treatment/ID (view source) Template:Treatment/Publication (view source) Return to Kobresia.