There are two (nearly identical) shakhas or recensions of the Shukla (White) Yajurveda, both known as Vajasaneyi-Samhita (VS):
Vajasaneyi Madhyandiniya (VSM)
Vajasaneyi Kanva of Kosala (VSK)
The former is popular in North India, Gujarat, parts of Maharashtra (north of Nashik) and northern parts of Orissa, and thus commands a numerous following. The Kanva Shakha is popular in Maharashtra (south of Nashik), most of Orissa, Karnataka, Andhra Pradesh and Tamil Nadu. Sureshvaracharya, one of the four main disciples of Jagadguru Adi Shankara, is said to have followed the Kanva shakha. The Guru himself followed the Taittiriya Shakha with the Apastamba Kalpasutra. The Vedic rituals of the Ranganathaswamy Temple at Srirangam, the second biggest temple in India, are performed according to the Kanva shakha. The White Yajurveda has two Upanishads associated with it: the Isa Vasya and the Brihadaranyaka upanishads. The Brihadaranyaka Upanishad is the most voluminous of all Upanishads.
The VS has forty chapters or adhyayas, containing the formulas used with the following rituals:
1.-2.: New and Full Moon sacrifices
3.: Agnihotra
4.-8.: Somayajna
9.-10.: Vajapeya and Rajasuya, two modifications of the Soma sacrifice
11.-18.: construction of altars and hearths, especially the Agnicayana
19.-21.: Sautramani, a ritual originally counteracting the effects of excessive Soma-drinking
22.-25.: Ashvamedha
26.-29.: supplementary formulas for various rituals
30.-31.: Purushamedha
32.-34.: Sarvamedha
35.: Pitriyajna
36.-39.: Pravargya
40.: the final adhyaya is the famous Isha Upanishad
