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sterile apex

Listing 1 - 10 from 44 for sterile apex

The Cycad Pages
... Microsporophylls: spirally orthostichous, aggregated into male cones and each with a simple, peltate sterile apex, which is not produced into a terminal spine. Each microsporophyll bearing numerous microsporangia ... Megasporophylls: spirally orthostichous, aggregated into female cones. Sporophylls simple, with a dilated peltate apex or lamina which is not produced into a terminal spine. Ovules two ( ...
plantnet.rbgsyd.nsw.gov.au

The Cycad Pages
... spirally orthostichous, aggregated into usually stalked male cones and each with a faceted sterile apex bearing two distinct, spreading stout spines or horns. Each microsporophyll bearing numerous microsporangia ... sessile female cones. Sporophylls simple, appearing peltate with a hexagonal, faceted dilated apex bearing two distinct, spreading stout spines or horns. Ovules two (rarely three), sessile ...
plantnet.rbgsyd.nsw.gov.au
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Key to Arisaemas of Japan
... (ca. 1/2) (sect. Pedatisecta). (6) 2. Leaves 2. Spadix with horn-like sterile flowers (always female inflorescences but occasionally male ones). Auxillary buds with accessory buds. ... sterile flowers. Auxillary buds solitary. (sect. Tortuosa Engler). (4) 3. Spadix appendix within the spathe, cylindrical, obtuse. A. heterocephalum Koidz 3. Spadix appendix long exerted from the spathe, filiforme at apex ...
botu07.bio.uu.nl

PlanetaCactus: Glossary of botanical terms
... leaves. ALKALOID: Organic nitrogen substances of vegetal origin with basic character and energetic physiological action. APEX: End point of leaf, petal, plants, etc. ATROPHYC: In atrophy state. ARMPIT: Point of ... - S - SCALE: A small, usually dry leaf that is closely pressed against another organ. SELF-STERILE: Plant which flower cannot be fertilized by its own pollen. SESSILE: Not supported on a ...
english.planetacactus.com

ACROSTICHACEAE [First Draft]
... , or coriaceous, glabrous on both surfaces; sterile pinnae lanceolate or tough-shaped to elongate-oblong, obtuse or acuminate at apex, entire at margin; fertile pinnae ... species in China. 1a. Sterile pinnae rounded, truncated, or retuse and shortly mucronate at apex ---------------------------------------------- 1. A. aureum 1b. Sterile pinnae narrowly acuminate at apex ------------- 2. A. speciosum ...
hua.huh.harvard.edu

Adiantaceae [First Draft]
... degree . 31a. Segments of pinnules entire, at least indistictly undulate at apex---------30. A. edendulum 31b. Apex of pinnule segments erose-dentate-------------------------------31. A. capillus-veneris 1. ... upper margins rounded, fertile pinnae with 2-5 shallow sinuses, denticulate on sterile parts; sterile pinnae denticulate on upper margins; upper pinnae and terminal pinnae all same shape ...
hua.huh.harvard.edu
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On-Line Glossary: B
... similar to a basidium without sterigmata. It may be an immature basidium or a permanently sterile structure in the hymenium. (15) basidioma. See basidiocarp. (pl. basidiomata.) (7) basidiomycete. A fungus ... and which bears exogenous spores of sexual origin. (Pl. basidia.) (15) basipetal. Successive from apex to base. (20) bifurcate. Dividing into two branches. (14) binary fission. Fission in which ...
ppathw3.cals.cornell.edu

On-Line Glossary: P
... . Bearing a papilla. (2) paraphysis. Sterile, elongated cell that may occur in the hymenium, intermixed with asci or basidia, elongating apically and having a free apex. (Pl. paraphyses.) (15) parasexual ... containing a fluid in which the various internal organs are suspended. (14) pseudoparaphysis. A sterile thread that grows downward in the cavity of some ascocarps, usually becoming attached at ...
ppathw3.cals.cornell.edu
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Dendrobium aphyllum
... , which are usually 4-5 in. (10-13 cm) long, are often smaller near the apex of the cane. They may be linear to ovate, and they are often wavy along ... ), and 2n = 57 (ref. 187, 504). Johansen (ref. 239) indicates that D. aphyllum is self-sterile and flowers dropped 5-8 days after self-pollination. When cross-pollinated, capsules opened in ...
retirees.uwaterloo.ca

San Marcos Vernal Pool Checklist
... : Coastal populations of Brodiaea in San Diego County with prominent hooded staminodes (with incurved apex) have been previously called B. jolonensis. Using the Jepson Manual (1996) which is based ... characteristics that indicate possible hybridization is a structure called a staminodium which represents a sterile, nonfunctional stamen. All three species (A, B & C) have three staminodia in the center ...
waynesword.palomar.edu




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