The modifications can involve the length and the nature of the internodes and the phyllotaxis, as well as variations in the proportions, compressions, swellings, adnations, connations and reduction of main and secondary axes. Morphologically, it is the modified part of the shoot of seed plants where flowers are formed.
Aloe hereroensis, showing inflorescence with branched peduncleĪn inflorescence is a group or cluster of flowers arranged on a stem that is composed of a main branch or a complicated arrangement of branches.
Fruit stipitate, 5.0-7.0 mm long including persistent perianth (3.5-5.5 mm long excluding perianth), 2.3-2.8 mm wide, with prominent reticulate venation.
Style 0.6-0.8 mm long, stigma ± opposite anthers. Stamens inserted at base of tepals filaments 0.2-0.4 mm long anthers 0.4-0.6 mm long. Perianth 2.5-4.0 mm long, receptacle elongate, 'glands' occasionally visible on outside lobes lanceolate to narrowly triangular, 0.9-1.3 x 0.3-0.7 mm, apex hooded, with sparse apical beard. Bracts linear-lanceolate, 4.3-5.5 x 0.4-0.8 mm, apex acute-acuminate, margins entire, fused to 2/3 or entire pedicel/peduncle, occasionally fused to ± 1/2 of cyme peduncles bracteoles 2.5-3.5 x 0.3-0.5 mm. Flowers in 4 to 16-flowered monotelic racemose inflorescences, with abundant 2 to 3-flowered monochasia and occasional 3-flowered dichasia, inflorescences often compressed pedicels 0.0-1.5 mm long cyme peduncles 1.0-4.5(6.0) mm long. Leaves slightly spreading, linear to linear-lanceolate, 3.0-11.0 x 0.2-0.9 mm, apex acute-acuminate and usually not cartilaginous, midrib raised on lower surface, less pronounced on upper surface, margins entire. Robust rhizomatous shrub, up to 1.5 m tall, vegetative scales present on rhizome and lower parts of stems, stems 1 to 13, arising from rhizome at intervals, spreading or rarely suberect, abundantly branched, terete or faintly sulcate, brown below and glaucous-green above, usually sparsely leafy (5 to 10(16) leaves per 50 mm at middle of stem). procerum and has a similar inflorescence structure but its leafy (14 to 40 leaves per 50 mm at middle of stem) and sulcate stems, flowers with stamens inserted in the perianth tube, straight placental columns and sessile fruits separates it from T. Thesium gracilarioides occurs sympatrically with T. gypsophiloides which is restricted to KwaZulu-Natal and differs in its moderately leafy (4 to 12 leaves per 50 mm at middle of stem) and sulcate stems, compound monochasial and dichasial cymes which resemble scorpioid cymes, flowers with stamens inserted in the perianth tube, straight placental columns and sessile, or occasionally shortly stipitate fruits. Thesium procerum is geographically separated from T. gypsophiloides are the only other species in the complex that grow taller than about 0.3 m. Thesium procerum is a large, much-branched, spreading shrub up to 1.5 m tall, which is characterized by its sparsely leafy (5 to 10(16) leaves per 50 mm at middle of stem) and terete stems, racemose inflorescences with abundant 2- or 3-flowered monochasia and occasional 3-flowered dichasia, flowers with stamens inserted at the base of the tepals, twisted placental columns and stipitate fruits.
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