ส้มป่อย, ใบ (SOMPOI, BAI) -

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Thai Herbal Pharmacopoeia

สำนักยาและวัตถุเสพติด กรมวิทยาศาสตร์การแพทย์ กระทรวงสาธารณสุข

Bureau of Drug and Narcotic, Department of Medical Sciences, Ministry of Public Health

ส้มป่อย, ใบ (SOMPOI, BAI)

Alexandria Senna Leaf, Indian Senna Leaf, Senna Leaf
Senegaliae Rugatae Folium
Senegalia Rugata Leaf
Category Mild laxative.

ส้มป่อย, ใบ (SOMPOI, BAI)
ส้มขอน, ใบ (SOM KHON, BAI)
Senegaliae Rugatae Folium
Senegalia Rugata Leaf
Category Mild laxative.
Senegalia Rugata Leaf is the dried leaflets of Senegalia rugata (Lam.) Britton & Rose
[Acacia concinna (Willd.) DC.] (Family Leguminosae-Mimosoideae), Herbarium Specimen
Number: DMSC 5337, Crude Drug Number: DMSc 1236.
Constituents Senegalia Rugata Leaf contains organic acids of which tartaric acid is its major
component; others include ascorbic acid, citric acid, oxalic acid, and succinic acid. It also
contains triterpenoids (e.g., lupeol), triterpenoid saponins, etc.
Description of the plant (Fig. 1) Woody climber or scandent shrub, rarely small tree, 3 to
6 m tall; stem and branch spiny, velutinous to tomentose, glabrescent, without glandular
hairs. Stipule cordate, 3 to 8 mm long, 1 to 6 mm wide, caducous. Leaves bipinnate, spirally
arranged, rachis 6 to 16 cm long; petiole 1.2 to 5.2 cm long, with gland at 0.4 to 2.7 cm above
base; pinnae (4–)5 to 10 pairs, (1.5–)2 to 9 cm long, with glands at junctions of 1- to 3-distal
pairs; leaflets 10 to 35 pairs per pinna, opposite, sessile, narrowly oblong, 0.3 to 1.2 cm long,
0.8 to 3(–4.8) mm wide, apex asymmetrically rounded to sharply acute, mucronate-apiculate,
always bent forwards, base asymmetrically truncate, margin mostly ciliate, both surfaces
glabrous to sericeous, main vein marginal at base, not parallel to upper margin, often with
2 or more accessory veins at base, lateral veins conspicuous, reticulate. Inflorescence
capitulate, axillary, 1 to 3 heads per node, each consisting of 35 to 45 flowers; peduncle 2.5
to 3.2 mm long, densely pubescent; bract oblong, 0.5 to 1 mm long, reddish. Flower whitish;
calyx 2 to 3.2 mm long, tube glabrous to puberulous, lobes 5, triangular to ovate, 0.1 to
0.5(–0.9) mm long, apex acute, glabrous to puberulous; corolla (2.3–)3 to 4 mm long, tube
glabrous, lobes 5, ovate to ovate-oblong, 0.5 to 1 mm long, apex acute, glabrous; ovary
superior, oblong, 0.8 to 1.5 mm long, glabrous to sericeous, 10- to 12-ovuled, stipitate; stipe
1 to 1.5 mm long. Fruit a pod, oblong, 1 to 1.5 cm long, 1.7 to 2.7 cm wide, margin often
sinuate, pod straight, flattened, thick, reddish green, becoming very wrinkled when dried,
glabrous, more or less segmented, often falling apart into 1-seeded segments. Seeds 5 to 12,
oblong to obovate, 0.6 to 1 cm long, 4.5 to 8 mm wide, flattened, black, and shiny.
Description Odour, indistinct; taste, sour and slightly astringent.
Macroscopical (Fig. 1) A mixture of entire and broken, green to brownish green leaflets,
with small amount of rachillae. Complete leaflets narrowly oblong, 0.5 to 1 cm long, 0.6 to
2.8(–4.6) mm wide, apex asymmetrically rounded to sharply acute, mucronate-apiculate,
always bent forwards, base asymmetrically truncate, margin mostly ciliate, both surfaces
glabrous to sericeous, main vein marginal at base, not parallel to upper margin, often with
2 or more accessory veins at base, lateral veins conspicuous, reticulate.
Microscopical (Figs. 2a–2d) Transverse section of the leaflet through the midrib shows
upper epidermis, mesophyll, vascular tissue, and lower epidermis. Upper epidermis: a layer
of round or oval cells. Mesophyll: 1 to 3 layers of cylindrical palisade cells, some containing
prismatic crystals; spongy cells, oval shaped; lamella collenchyma and parenchyma in the
lower part of midrib. Vascular bundle: phloem and xylem. Lower epidermis: a layer of
round or oval or rectangular cells.

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Thai Herbal Pharmacopoeia

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