The pigment clearing of the leaves showed that H. The measured anatomical traits in the cross sections of roots and stems of the two Hoya species did not differ with the exception of stomatal types and arrangement in the leaves. incrassata has coriaceous lance-ovate leaves, whitish to yellowish fused petals, yellow inner coronal lobes, reddish to orange outer coronal lobes, and fused sepals. soligamiana has glabrous lanceolate leaves, whitish to creamy petals, purplish to pink inner and outer coronal lobes, and whitish to pink fused sepals. The results showed that hoyas differ in their leaf shape and texture, flower colour, and the inflorescence shape and position. Leaf pigments were cleared to observe the venation and stomatal arrangement. ![]() Free hand sections were taken from leaves, shoots and roots for determination of structural differences. Fresh cuttings were used for morphological and anatomical measurements. Abstract: This study compared the morpho-anatomical characters of two horticulturally important hoyas endemic to the Philippines viz., Hoya incrassata and Hoya soligamiana.
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