Galls on the marine red alga Prionitislanceolata (Halymeniaceae): specific induction and subsequentdevelopment of an algal-bacterial symbiosis [0.03%]
海洋红藻Prionitis lanceolata上的虫煤：藻菌共生关系的特异性诱导及其后续发展
J B Ashen,L J Goff
J B Ashen
Gall formation in Prionitis lanceolata is associated with aspecific eubacterium (Proteobacteria [alphasubclass], Rhodobacter grouping), which, typical ofbacterial symbionts, has not yet been cultivated or isolated in pureculture. This inves...
Cytotype distribution at a diploid-tetraploid contact zone in Chamerion (Epilobium) angustifolium (Onagraceae) [0.03%]
牻牛儿苗属独行菜居群中二倍体和四倍体的接触分布格局
B C Husband,D W Schemske
B C Husband
In North America, the geographic distributions of diploid and tetraploid Chamerion (formerly Epilobium) angustifolium overlap in a narrow zone along the southern border of the boreal forest and along the Rocky Mountains. We examined the fre...
Flower morphometry of Rhizophora mangle (Rhizophoraceae): geographical variation in Mexican populations [0.03%]
墨西哥红树蜂巢燕鸥的花形态计量学：地理变异
C Domínguez,L Eguiarte,J Núñez-Farfán et al.
C Domínguez et al.
We explored the patterns of intra- and interpopulation variation in flower morphology of the red mangrove, Rhizophora mangle. Twelve populations in Mexico were studied: five from the Gulf of Mexico and the Caribbean Sea, and seven from the ...
Osmunda (Osmundaceae) from the Triassic of Antarctica: an example of evolutionary stasis [0.03%]
南极三叠纪木贼亚门柳叶菜属(Osmundaceae)：演化守恒的例子
C Phipps,T Taylor,E Taylor et al.
C Phipps et al.
Compressed specimens of the fern Osmunda are described from the Triassic of the Allan Hills, Antarctica. The specimens consist of a once pinnate, deeply pinnatifid fertile frond as well as several sterile specimens. Six pinnae are present o...
Pattern of morphological variation and diversity of Cocos nucifera (Arecaceae) in Mexico [0.03%]
墨西哥椰子(Cocos nucifera)的形态变异和多样性模式
D Zizumbo-Villarreal,D Piñero
D Zizumbo-Villarreal
The pattern of morphological variation of Cocos nucifera in Mexico was statistically and numerically evaluated. Forty-one populations were analyzed, using 17 morphological fruit characters. Principal components and cluster analyses indicate...
Biomechanics and functional anatomy of hollow-stemmed sphenopsids. I. Equisetum giganteum (Equisetaceae) [0.03%]
空心茎石松类的生物力学及功能解剖学。I．巨穗草（石松科）
H Spatz,L Köhler,T Speck
H Spatz
The hollow stem of Equisetum giganteum owes its mechanical stability to an outer ring of strengthening tissue, which provides stiffness and strength in the longitudinal direction, but also to an inner lining of turgid parenchyma, which lend...
Ovule and seed development of Lacandonia schismatica (Lacandoniaceae) [0.03%]
lacandonia schismatica（lacandoniaceae）的胚珠和种子发育
S Vázquez-Santana,E Engleman,A Martínez-Mena et al.
S Vázquez-Santana et al.
Ovule and seed development is described for Lacandonia schismatica, a species whose androecium is surrounded by the gynoecium. The ovule in each carpel is basal, anatropous, tenuinucellate, and bitegmic. The female gametophyte is formed by ...
Modification of phenotypic and functional gender in the monoecious Arum italicum (Araceae) [0.03%]
意大利天南星（天南星科）雌雄同株植物性别表型和功能的可塑性
M Méndez
M Méndez
Other than studies on sex-labile Arisaema species, studies of gender patterns in Araceae are scarce. The modification of phenotypic and functional gender was investigated in three populations of the monoecious Arum italicum Miller. The prob...
Effects of thermoperiod on recovery of seed germination of halophytes from saline conditions [0.03%]
热梯度对盐生植物种子从盐胁迫中恢复萌发的影响
M Khan,I Ungar
M Khan
Recovery of seed germination from NaCl salinity of desert shrubs (Haloxylon recurvum and Suaeda fruticosa, and the herbs Zygophyllum simplex and Triglochin maritima was studied under various thermoperiods. The percentage of ungerminated see...
R Densmore
R Densmore
Day length control can effectively limit seed germination to favorable seasons, but this phenomenon has been studied in relatively few wild plants. I tested species from interior Alaska for day length control of germination under controlled...