Compound in structure but having a single leaflet, as the leaves of certain citrus plants.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(Botany) (of a compound leaf) having only one leaflet
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˌyu nəˈfoʊ li əˌleɪt)

compound in structure yet having only one leaflet, as an orange leaf.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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Spondiashaplophylla Airy Shaw and Forman] which occurs in China (Yunnan), Vietnam, Myanmar, and NE India (Assam).It has simple or unifoliolate leaves, contrasting with the pinnately compound leaves of most Spondioideae.
The plants were thinned at unifoliolate leaf stage to 5cm between plants, maintaining 20 seedlings per meter row length.
Plants of each genotype (two pots each with eight plants) were inoculated at the unifoliolate leaf stage with SMV strains G1 or G7.
The leaves tend to be decussate on the lower stem (with opposite pairs, the succeeding pairs turned 180[degrees]), usually alternate near the stem apex, petiolate, palmately compound (except for small unifoliolate leaves at branch apices), with an odd number (3-13) of coarsely serrate, lanceolate leaflets.
The twinspots are of variable size and are apparent on the upper surfaces of the unifoliolate and early trifoliolate leaves of TW 98-1 during the juvenile growth period.
Lindley, 1831; Meacham, 1980; Cronquist, 1981; Takhtajan, 1997, among many others) to consider these leaves as unifoliolate.
Plants were inoculated at the unifoliolate stage at the same time.
The abaxial leaf surfaces of two unifoliolate leaves in each plant were inoculated at 7 d after planting with the rust spore suspension using the inoculation technique of Stavely (1983).
At R1 of each cultivar each year, height from the soil surface to the main stem apex was measured and node number (unifoliolate node = one) was counted to include the node of the uppermost unrolled trifoliolate on five plants in each plot.
Dwelley (PI 598079) is a unifoliolate Kabuli-type cultivar that was developed for resistance to Ascochyta blight (Muehlbauer et al., 1998b).
Brakke and Gardner (1987) reported that a low rate of early growth in pigeonpea was associated with a lack of exposed cotyledons and small unifoliolate and trifoliolate leaves.
The stem was girdled below Node 7 (Node 6 in Exp.1) for the one-node treatment (Node 1 was the node of the unifoliolate leaves).