Description from Flora of China
Gypsophila fastigiata Linnaeus var. cephalotes Schrenk in Fischer & C. A. Meyer, Enum. Pl. Nov. 1: 92. 1841.
Herbs perennial, 20--50 cm tall. Roots thick, 3--15 mm in diam. Stems several, caespitose, rarely solitary, erect, branched, distally glandular pubescent. Leaves linear-oblanceolate, 3--6 cm × 3--8 mm, apex obtuse. Corymbose cymes concentrated into subcapitate clusters; peduncle 1--4 cm; bracts lanceolate, margin undulate, membranous, apex acuminate. Pedicel 0.5--2.5 mm, glabrous. Calyx purple, campanulate, 2.5--3 mm, divided for ca. 1/2 its length; lobes slightly undulate and membranous at margin, apex obtuse. Petals white, obovate-oblong, ca. 6 × 1 mm, apex truncate or retuse. Stamens longer than petals. Ovary obovoid, ca. 2 mm. Styles ca. 4 mm, shorter than stamens. Capsule globose, 3--4 mm. Seeds brown, compressed globose, ca. 1.5 mm, truncately tuberculate. Fl. Jun--Aug, fr. Jul--Sep.
Gypsophila cephalotes F.N.Williams, J. Bot. 27: 323, sub. no. 21. 1889: Name status: pro syn. (invalid)
In his ‘REVISION OF THE SPECIFIC FORMS OF THE GENUS GYPSOPHILA’, Williams included 76 species and placed them in 3 subgenera, viz., Pseudosaponaria (1 species), Eugypsophila (4 species), and Pauciovulatae (71 species). On p. 321, he mentioned "The species as here delimitated are grouped in three subgenera, of which the first consists only of the Saponaria porrigens of Linnaeus, the second coincides with Fenzl's Ankyropetalum, and the third contains seventy-one species." The accepted species names are in Roman, and the synonyms are in italics. The name ‘G. cephalotes Schrenck’ is cited in italics as a pro synonym of ‘G. pulposa Gilib.’ (1782; invalid)
See p. 323, no. 21: https://www.biodiversitylibrary.org/item/35883#page/343/mode/1up
See p. 321, paragraph 2: https://www.biodiversitylibrary.org/item/35883#page/341/mode/1up
Gypsophila cephalotes (Schrenk) Korshinsky, Zap. Imp. Akad. Nauk Fiz.-Mat. Otd. 4(1): 66, 67, 107. 1896.
Remarks: The citation of 'G. cephalotes Schrenk' (on p. 107) provides an indirect reference to the basionym
P. 107: https://www.biodiversitylibrary.org/page/57524745#page/875/mode/1up
Mountain slope grasslands; 1000--3900 m. N Xinjiang [NE Afghanistan, Kazakhstan, W Mongolia, N Pakistan, Russia (W Siberia)].