+
+
+
+S. nilagirica
+
+ |
+
+
+S. procumbens
+
+ |
+
+
+S. japonica
+
+ |
+
+
+S. apetala
+
+(
+Crow 1978
+, Al-Taie & Almousawi 2018)
+ |
+
+
+
+Habit
+ |
+Annual herb |
+Perennial herb |
+Annual herb |
+Annual herb |
+
+
+
+Leaves
+ |
+Lanceolate-subulate, 3.5–5 × 0.3–0.5 mm, non- succulent, with glandular hairs at sheathy base |
+
+Linear-lanceolate or subulate, 5–8 ×
+c.
+0.5 mm, succulent and glabrous
+ |
+Linear-lanceolate, 0.6–0.8 × 0.1–0.5 mm, succulent, upper cauline leaves glandular pubescent towards base |
+Linear-lanceolate, 3–8 × 1–3 mm, succulent, glabrous, leaf base ciliate |
+
+
+
+Pedicel
+ |
+Upright during capsular development, glandular hairs at base |
+Recurved during capsular development, glabrous |
+Erect, glandular pubescent |
+Erect, glandular pubescent |
+
+
+
+Sepal
+ |
+4 in number, lanceolate, 1.7–2.5 × 0.1–0.7 mm, hooded, glandular pubescent, free from the capsule valves after dehiscence |
+4 in number, broadly ovate, 1.5– 2.2 × 0.3– 0.5 mm, hooded, glabrous, free from the capsule valves after dehiscence |
+
+5 in number, ovate- oblong, 2–2.5 ×
+c
+. 0.5 mm, hooded, glandular pubescent on abaxial surface, appressed to capsule valves after dehiscence
+ |
+4 in number, broadly ovate, hooded, glandular pubescent, free from the capsule valves after dehiscence |
+
+
+
+Petal
+ |
+4 in number, trigonal, 0.3–0.4 × c. 0.1 mm, limb bilobed for half the length with triangular ovate lobes white-transparent, inconspicuous |
+
+4 in number, obovate,
+c.
+0.5 × 0.7 mm, limb entire, white and inconspicuous
+ |
+
+5 in number, ovate, 1–2.5 ×
+c
+. 0.5 mm, limb entire, white and conspicuous
+ |
+Absent |
+
+
+
+Capsule
+ |
+4-valved, ovoid, 2–2.5 × 1–1.5 mm, valves lanceolate, yellowish- white, equal to the length of sepal |
+
+4-valved, ovoid, 2–2.5 × 1–
+c.
+0.5 mm; valves ovate-lanceolate, creamy- white, longer than sepal
+ |
+
+5-valved, globose-ovoid, 2–2.5 × 1–
+c.
+0.5 mm; valves ovate; yellowish- white, longer than sepal
+ |
+4-valved, ovoid, ovate- lanceolate, yellowishwhite, longer than sepal |
+
+
+
+Seed
+ |
+Reniform- globose, 0.2–0.3 × 0.1–0.2 mm, smooth, non-grooved, brownish-black, elongate, cog-wheel like epidermal cells with acute or rarely obtuse interdigitating teeth, forming a shallow ridge |
+
+Obliquely triangular,
+c.
+0.5 × 0.2 mm, grooved, brown, smooth with uniform compressed cog- wheel pattern
+ |
+Reniform- globose, 0.2–0.3 × 0.1–0.2 mm, non-grooved, dark brown, surface encased by compressed cog-wheel pattern, tuberculate with rows of papillae |
+Obliquely triangular, grooved, brown, surface pebbled or mostly papillose with distinct mammillate tubercles with blunt, compressed interdigitating cogs of epidermal cells |
+
+
+
+Pollen grains
+ |
+Spheroidal, 5–15 µm, pantoporate, 20–30 pores, surface with unevenly arranged close echinae, inter-echinulate distance short, perforations rare. |
+Spheroidal, 17-19 μm, pantoporate, 20–30 pores, surface with unevenly arranged lax echinae, inter-echinulate distance long, perforate. |
+Spheroidal, 20-22 μm, pantoporate, 35–50 pores, surface with evenly arranged lax echinae, inter-echinulate distance short, perforate. |
+Spheroidal, 19-21 μm, pantoporate, 10–15 pores, surface with evenly arranged lax echinae, inter-echinulate distance long, perforate. |
+
+
+